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InvisibleRahz
Alive Again
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Registered: 11/10/05
Posts: 9,230
Ultrasonic Tub Writeup
    #6442076 - 01/09/07 03:18 PM (17 years, 23 days ago)



Materials needed:

(1*)4 tubs
(1*)12 grow trays
(1*)modular shelf
ultrasonic humidifier
cool mist humidifier
(2*)repeat cycle timer
(3*)garden hose (7/8"OD 5/8"ID)
15 feet of 1/2" OD vinyl tubing
(4*)plastic cup
(5*)1 1/4" ID Rubber pipe doughnut OR Foam sealant
5' section of 1 1/4" PVC pipe
short section of 3/4" PVC pipe
4: 1 1/4" to 3/4" T connectors
4: 45 degree elbows
4: caps
fabric air filter
plastic canister (air mixer)
PVC cement
electrical tape

Tools needed:

One or more of these:
-Band saw (ideal)
-Hack saw (less than ideal)
-PVC cutter (supplement for the hack saw)
Drill with assorted large bore bits
Assorted common tools
Dremel (highly recommended)



(#*) Notes:

1: The specific items I used are listed below. The tubs were bought at Lowe's, the shelf and trays were bought at Walmart. It will be ideal if you can find the exact items as it all fits perfectly. It may not be possible. If you cannot get these items, your first act will be to find similar items that will fit the bill. Buy/grab a single tray, and take it to the tub section and see if you can find a tub that will hold 3 of them. If this proves difficult, you will have to improvise further, or consider using a traditional mono-tub setup with the CO2 vents above the casing layer. Take the tub's measurements and find a shelving unit that will hold 4 of them (plus the ultrasonic) comfortably. It will be easier to find a shelf match for the tubs.

Tubs(From Lowe's): Rubber maid Snap-topper Crystal Series 96 Quart
Trays(From Walmart):3" deep kitty litter trays (approximately 9 1/2" x 14")
Shelving unit(From Walmart): 16" x 36" x 72"



2: Variable repeat cycle timer: The one I'm using was bought from an online hydroponics shop. Do a Google for "Encore repeat cycle timer". While I was shopping I found several other brands that would get the job done. I got the best deal on the Encore. This type timer generally has 5 second to 30 minute on cycles and 5 minute to 8 hour off cycles. This will big the most expensive piece of equipment, but with it, you will have supreme control over the humidity and casing saturation in your grow tubs.



3: Garden hose: This is what I've used, so I'm including instructions for it. There are of course other options (some listed in directions part 7).

4: Plastic cup: You will need to find a sturdy plastic cup large enough that you can jam the bottom of it into the ultrasonic's port. Alternatively, you could go with some other way of connecting the PVC to the ultrasonic. The benefit of the cup is that it's a tight fit that gives a little play, which can be helpful, AND, it lifts right out so the ultrasonic is easy to remove for refill. It needs to be strong enough so that it will not sink down into the ultrasonic over time, the one I'm using is made of some kind of hard plastic.

5: I used a rubber pipe doughnut to connect the PVC to the cup, foam sealant could be substituted. The only disadvantage with using the rubber doughnut is that you may need to trim it with a razor. Then again, it may nest down perfectly in your cup.

Directions:

1: Build the shelving unit from the ground up. Position the first shelf a few inches above the floor and place the ultrasonic humidifier on it. Add the second shelf, making sure you have room to easily remove the ultrasonic. Place the first tub on the second shelf, and continue building upwards. Give yourself room to remove lids without removing the tub, and make all upper shelves equidistant. Make sure everything is tight so it doesn't settle later. Once you have all four tubs in place, number them (this can be important later).

2: Cut a large hole in the bottom of the cup. A hole saw would be ideal for this. I used a drill hole, expanded with a pair of tin snips. Insert the rubber doughnut into the cup, carefully trimming with a razor if needed. Cut the top of the cup off if necessary. You should have a tight fit between the cup and rubber, and there will be no need to use PVC cement here. apply PVC cement to the inside of the doughnut and outside of the 1 1/4" pipe, and shove the pipe into the doughnut. Set aside to dry. If you use foam to attach the 1 1/4" PVC and cup, you will need to cut a hole in the bottom of the cup just large enough so the PVC will not go through.  You will need to sand the outside of the PVC and the inside of the cup. Position the pipe inside the cup and fill the gap completely with foam. Let dry standing in the unit to insure it's vertical. There will be a little play between the cup and ultrasonic, so this doesn't have to be perfect, but you want it as close as possible to prevent leaks.



3: Cut holes for the PVC elbows in the tubs. You'll want to place them a few inches below the top of the tubs. I used a 1 1/4" drill bit and sanded the hole out to accept the elbow. A Dremel comes in handy here. Take care to get all holes centered left to right as closely as possible, and also equal distance from the bottom of the tub. Neither measurement must be perfect. If your holes are slightly off, you have the tubs numbered and everything will align properly so long as the order is kept.

4: Assemble the PVC branches according to the picture. The top branch will not need a cap. Do not glue anything yet. This would be a good place to point out that these branches will not be glued to the main PVC shaft. There's no specific length for the 3/4" pipe. Mine were right at 4". Cutting them a little long isn't a bad idea as they can always be cut down. Once you have a branch assembled, inspect the inside. There will be a rim that will cause a small amount of water to collect in the elbow. This can be left "as is", or can be flushed out with a Dremel cutter bit or metal file if desired. Either way, a small ammount of water will collect in these branches. I use an ounce or two of peroxide in the ultrasonic to prevent anything nasty from growing. Occasional cleaning wouldn't be a bad idea.



Prep for step 5: If you play with the T connectors and the main shaft you will notice that you can sink the pipe about 1/2" into a connector without much effort. It will push in and stop with just a little pressure. Do this and mark your PVC so you can measure the sink distance. You will need this info when you are cutting pipe for the main shaft. Well call this the ESD (easy sink distance)

5: Assemble the main shaft. Place your 1 1/4" cup fitted pipe into the ultrasonic humidifier and move the humidifier so the pipe is flush with the shelving unit. Insert a branch into the first tub. Hold the branch so it's as level as possible, and mark where the bottom of the 3/4" pipe intersects with the 1 1/4" pipe. Remove the main shaft and position a T connector beside it, lining up the 3/4" hole with the mark you made. Make another mark on the main shaft where the bottom of the T fitting ends. Make a mark above this mark using your EDS. This is where the pipe will be cut. Once you have your final mark, go ahead and make your first cut, reassemble into the unit and push the branch into the T connector. When the pieces are assembled with a good fit, check to see if the T connector is flush with your lower mark. If not, make a new mark showing the correct position of the T connector.

At this point we need to cement the T connector to the shaft. Important: Once you glue the PVC and connect them, you CANNOT plan on adjusting anything. The pieces will set almost instantly and you will get what you get. Add cement to the inside of the T connector and the outside of the shaft. Push the T connector onto the shaft, and quickly confirm that you hit your mark correctly. Place the shaft on the ultrasonic and insert the branch for confirmation. Is it OK... or are you screwed? Relax, it will work fine :wink: once you have your first joint set, cement the rest of the shaft to the top of the T connector. From this point you will be repeating the procedure for each tub. Although it isn't a concern for the first joint, the second and subsequent joints will need to be aligned left to right AS CLOSELY AS POSSIBLE with the original T connector. If any of the T connectors are twisted too far left or right, it can be difficult to get all the branches inserted into the finished shaft.

Now, I know this sound dubious, but I was able to accomplish it on my first try, without access to a band saw. Just be sure to take things slow and have a good grasp on what you're about to do when you're gluing, and things will work out fine. Once you have all four T sections glued, you will need to seal the top. I did this with a 4th cap, which just happened to fit snugly into the top T section. You could also add a short section of 1 1/4" pipe to the top and top it off with a 1 1/4" cap.

6: Drill port holes in the caps. I started with this order:

Top elbow: no cap
3rd elbow: cap with 5/8" hole
2nd elbow: cap with 9/16" hole
1st elbow: cap with 9/16" hole

The main idea here is that the lower branch will be receiving the most pressure, so it will be the smallest. Each hole will be larger to accommodate a lower pressure level from the main shaft. Cap holes on the 2nd and 3rd elbow will need to be expanded in order to achieve moisture equality in each of the four tubs. I would recommend that you first run the unit with the original holes and measure the condensate before adjusting anything.

So it goes like this: Assemble the branches and hook everything up. With the tops on the tubs, run the ultrasonic for 3-4 hours at full blast. Once this is done, use a measuring cup to tabulate the amount of water in each tub. You should notice that the top and bottom tubs receive the most water. From this point you must increase the 2nd and 3rd cap holes bit by bit until you can run the unit for several hours and collect an equal amount of water from each tub. A Dremel is ideal for this task. Keep in mind that enlarging any hole will affect the output of all other holes, including, to a lesser degree, the holes below it. It doesn't have to be perfect, but it needs to be close. Once you get your moisture delivery right, cement the branches together.

7: FAE: I run a cool mist, dry, to provide FAE. If you don't have an extra cool mist laying around, you could attach a small blower (squirrel cage fan) to the mixing box. This would be IDEAL because you wouldn't have to worry about the fan bearings wearing out. I have minimized pressure by adding extra hose and vent holes (hard to see in the pic). The main idea here is to cover the original output, split the cool mist output in two, and channel half the output into 4 separate tubs. If your tubs are similar to mine (96 quart), and your tubes are similar in length and diameter, you can expect to get between 4 and 5 air exchanges per hour. Garden hose isn't ideal, but I had some laying around. It's inner diameter will accept a 5/8" drill bit (7/8" OD), and is a tight fit into a 3/4" hole. I'm using 2 holes of 3/4" for the exhaust and 3 holes of the same size for the garden hose. Cut the hose at an angle for easier insertion.



OR

You could improvise with whatever method you find appropriate. My cool mist setup isn't exactly the shining center piece of this setup, but it gets the job done.

My airflow is directed to a mixing box (plastic canister) and split in 4 from there. Drill a 1/2" hole in each tub beside the PVC branch holes. Being generous to avoid crimping the 1/2" tubing, find the longest run from the mixing box to a tub. Cut four pieces this length. Equal lengths of tube are required to insure equal air distribution between the tubs. I used a 3/8" drill bit, and expanded the holes with a Dremel to tightly accept the 1/2" tubing. The tubing can be taped to the PVC shaft to control the direction of airflow inside the tubs.

8: All that's left is to add some exhaust holes to the tubs. Drill 4 holes of 1/2" near the bottom corners and covered them with a small patch of filter fabric. I used Tyvek, but have since switched to filter material for a little extra FAE. Due to the elevated moisture in these tubs, I've avoided the use of polyfill.

Notes on operation:

I originally ran the ultrasonic for 3 minutes every 20 minutes. Over time, the casing appeared to go beyond field capacity, so I lowered the cycle to 1 minute every 20 minutes and this seemed to keep things nice and humid without being excessive. During the pinning stage, I reduced the cycle to 1 minute every hour, though I'm not sure this was necessary. During the fruiting stage, I was up to 2 minutes every 20 minutes. The fruits seemed to draw out any additional moisture the casing was receiving, and the casing was below field capacity at the time of harvest. After harvest I ran they cycle at 3 minutes every 20 minutes, and it seems that after 3 days the casing is back up to field capacity. Currently waiting on the second flush.

I originally planned on taping the lids shut and providing an exhaust on the far side of the tub. So far, not doing this has worked out fine. Switching out the Tyvek for filter material should compensate for the open lid. I'm still on the first grow, so if problems occur, I will post them here with any mods I use to correct it.



--------------------
rahz

comfort pleasure power love truth awareness peace


"You’re not looking close enough if you can only see yourself in people who look like you." —Ayishat Akanbi


Edited by Rahz (01/09/07 03:34 PM)


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Offlinechainsaw1298
shroomaddict
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Registered: 04/23/06
Posts: 293
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Last seen: 10 years, 7 months
Re: Ultrasonic Tub Writeup [Re: Rahz]
    #6442122 - 01/09/07 03:33 PM (17 years, 23 days ago)

Nice :rockon:


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InvisibleBlutjager
Inhuman
Male

Registered: 06/11/06
Posts: 9,220
Re: Ultrasonic Tub Writeup [Re: chainsaw1298]
    #6442283 - 01/09/07 04:39 PM (17 years, 22 days ago)

:whoah:  :eek: Dude thats.......Insane :eek:  :whoah:

If I didn't already rate you you would get 5 right now just for having the patience to go through all that trouble


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OfflineVibrate
with me

Registered: 11/18/06
Posts: 256
Last seen: 15 years, 16 days
Re: Ultrasonic Tub Writeup [Re: Blutjager]
    #6442548 - 01/09/07 06:00 PM (17 years, 22 days ago)

I had seen your set up and thought it looked geat.  Very nice. :congrats:


--------------------
I love you


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OfflineBraeden
Stranger
Registered: 12/29/06
Posts: 28
Last seen: 13 years, 3 months
Re: Ultrasonic Tub Writeup [Re: Vibrate]
    #6442628 - 01/09/07 06:18 PM (17 years, 22 days ago)

That is awesome!!!


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Invisibled4a2n0k
The Dude
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Registered: 07/23/03
Posts: 742
Re: Ultrasonic Tub Writeup [Re: Rahz]
    #6442794 - 01/09/07 06:52 PM (17 years, 22 days ago)

Thats one helluva nice setup you got going one there. :crazy2:  :crazy2:  :crazy2:  :crazy2:  :crazy2:  Very well documented as well!

If you don't mind me asking, why did you choose 4 large tubs over one tiered greenhouse?


--------------------
Row, row, row your boat,
Gently down the stream.
Merrily, merrily, merrily, merrily,
Life is but a dream.


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Invisiblepinkfloydms
!!!!!
Male

Registered: 05/26/04
Posts: 4,470
Loc: City of Dreams
Re: Ultrasonic Tub Writeup [Re: d4a2n0k]
    #6442977 - 01/09/07 08:00 PM (17 years, 22 days ago)

Nice Rahz. :wink:


--------------------
Muppet Said:

so yeah:
- 'sex' five times
- once with a man
- once with a cadaver
- and thrice with actual women(all of which were prostitutes)
Best story ever!

www.panicstream.com :thumbup:


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InvisibleBlutjager
Inhuman
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Registered: 06/11/06
Posts: 9,220
Re: Ultrasonic Tub Writeup [Re: d4a2n0k]
    #6443047 - 01/09/07 08:16 PM (17 years, 22 days ago)

Quote:

d4a2n0k said:
Thats one helluva nice setup you got going one there. :crazy2:  :crazy2:  :crazy2:  :crazy2:  :crazy2:  Very well documented as well!

If you don't mind me asking, why did you choose 4 large tubs over one tiered greenhouse?




I was thinking that too,it looks like it takes up more room than a greenhouse and for that much work you could set up a dozen greenhouses,that is why I find this so amazing....good writeup man,I mean I will more than likely never build one but I book marked it anyway just to marvel at the ingenuity that some people in this hobby put forth :rockon: I love this place


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Invisiblepinkfloydms
!!!!!
Male

Registered: 05/26/04
Posts: 4,470
Loc: City of Dreams
Re: Ultrasonic Tub Writeup [Re: Blutjager]
    #6443059 - 01/09/07 08:19 PM (17 years, 22 days ago)

Well this setup would be great for keeping contams from jumping from tub to tub. If you had a green house and got the green meanie it could spread quickly through your other trays and kill your whole grow. :wink:


--------------------
Muppet Said:

so yeah:
- 'sex' five times
- once with a man
- once with a cadaver
- and thrice with actual women(all of which were prostitutes)
Best story ever!

www.panicstream.com :thumbup:


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InvisibleRahz
Alive Again
Male

Registered: 11/10/05
Posts: 9,230
Re: Ultrasonic Tub Writeup [Re: d4a2n0k]
    #6443081 - 01/09/07 08:24 PM (17 years, 22 days ago)

>>>>If you don't mind me asking, why did you choose 4 large tubs over one tiered greenhouse?

Well, there's no one reason.

The next step might be to seal the tubs and filter the exhaust. That would keep spores inside and isolate possible contams to one level (like floyd said). Then it would "make sense".

I could also use larger filtered vents, and possibly do away with the FAE. Four mono-tubs with an internal mister.

It's just an idea I had, and I played around with it until I had most of it built in my head. It had to be done after that.


--------------------
rahz

comfort pleasure power love truth awareness peace


"You’re not looking close enough if you can only see yourself in people who look like you." —Ayishat Akanbi


Edited by Rahz (01/09/07 08:26 PM)


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Offlinenugjug
Wanderer

Registered: 11/07/05
Posts: 703
Last seen: 5 years, 11 months
Re: Ultrasonic Tub Writeup [Re: Rahz]
    #6446402 - 01/10/07 06:55 PM (17 years, 21 days ago)

So what is the function of the mixing box on the cool mist? Why not just run the lines directly to the boxes?


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InvisibleRahz
Alive Again
Male

Registered: 11/10/05
Posts: 9,230
Re: Ultrasonic Tub Writeup [Re: nugjug]
    #6448156 - 01/11/07 09:29 AM (17 years, 21 days ago)

>>>>So what is the function of the mixing box on the cool mist? Why not just run the lines directly to the boxes?

Well, I did mention that as a possibility. I already had 3/4" holes in the cool-mist.

I'll be switching to a blower eventually anyway, but,

If I were to use a cool mist again, I would probably try that.

I put the least effort into the cool-mist aspect. One thing I never even thought of: Since it's running dry, there's no need for exhaust holes. Just partially tape over the original vent. Would be easy to adjust for optimal FAE. doh.


--------------------
rahz

comfort pleasure power love truth awareness peace


"You’re not looking close enough if you can only see yourself in people who look like you." —Ayishat Akanbi


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Offlinethatsstupid
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Registered: 07/25/08
Posts: 278
Loc: Austin TX
Last seen: 15 years, 4 months
Re: Ultrasonic Tub Writeup [Re: Rahz]
    #8807769 - 08/21/08 08:04 PM (15 years, 5 months ago)

ty


--------------------
"It's not enough. I need more. Nothing seems to satisfy. I don't want it. I just need it. To feel, to breathe, to know I'm alive."-Tool-
"And who are you and how can I try? Here inside I like metal Don't you?"- Nine Inch Nails
GOD IS DEAD!! AND NOOO ONEE CARES! IF THERE IS A HELL! I'LL SEEEE YOUUU THERE!!




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