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Hypercube
80 SRM



Registered: 12/18/05
Posts: 814
Last seen: 11 years, 22 days
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Modified monotub - workable?
#5320561 - 02/20/06 04:24 PM (17 years, 11 months ago) |
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I've got more compost than I know what to do with, so I'm gonna do up some monotubs asap. 
Thing is, my room is freezing and I need to use a space heater aimed at the tubs to bring them to spawning/fruiting temps. This would surely dry out the tubs cuz of all the hot, dry air getting in through the polyfil, you say? You're right. 
So my proposal, in lieu of AE holes on the sides of the tub, is to rig an air pump to blow into a jar of water placed on the bottom of the tub right next to the substrate, providing FAEs in a positive pressure environment. I have a 2 x 1500 cc/min dual outlet pump that I could feed into 2 tubs.
QUESTION BEING: The air coming FROM the pump will be at 30% rh. At 1500 cc/min in a......say......30L tub, will this air dry out the tub too much? Even though it's passing through an air stone/water? A possible alternative is to utilize a heat mat in some way.
Suggestions? I've got 50 lbs of compost to work with, here. You peeps will get thanked with a post of pornographic p. cube pinning pics for your pleasure.....
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cokaznrebel
BBQ CHK CHZ STK
Registered: 11/08/04
Posts: 328
Loc: Mile High
Last seen: 3 years, 4 months
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Re: Modified monotub - workable? [Re: Hypercube]
#5320581 - 02/20/06 04:29 PM (17 years, 11 months ago) |
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Just put your tub into a TiT incubator and set the temperature at 75.
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Hypercube
80 SRM



Registered: 12/18/05
Posts: 814
Last seen: 11 years, 22 days
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Re: Modified monotub - workable? [Re: cokaznrebel]
#5320605 - 02/20/06 04:34 PM (17 years, 11 months ago) |
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Quote:
cokaznrebel said: Just put your tub into a TiT incubator and set the temperature at 75.
Alas, this wouldn't get my any air exchange, and I'm not in the mood to fan my tubs umpteen times a day. Plus, I would have to buy twice as many tubs and have only one spare sub heater.
Other ideas?
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cokaznrebel
BBQ CHK CHZ STK
Registered: 11/08/04
Posts: 328
Loc: Mile High
Last seen: 3 years, 4 months
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Re: Modified monotub - workable? [Re: Hypercube]
#5320611 - 02/20/06 04:35 PM (17 years, 11 months ago) |
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My top holes are open to the surrounding air, You could just cut PVC piping through both tubs and stuff it with polyfill.
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Hypercube
80 SRM



Registered: 12/18/05
Posts: 814
Last seen: 11 years, 22 days
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Re: Modified monotub - workable? [Re: cokaznrebel]
#5320645 - 02/20/06 04:44 PM (17 years, 11 months ago) |
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You find that that's enough FAE? I'd like to be able to give it a lot of air, and I might as well put my pumps to use and not have to buy twice as many tubs. I still have a feeling that any polyfil holes will allow too much humidity out of the tub (my air is so fucking DRY).
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tokey666
Let's Build It Instead


Registered: 08/05/05
Posts: 666
Last seen: 2 years, 8 months
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Re: Modified monotub - workable? [Re: Hypercube]
#5321015 - 02/20/06 06:16 PM (17 years, 11 months ago) |
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Hmmm...are you in a position to hook up a fan and use perlite in the bottom of your tub and just put the substrate in trays? (See the link in my signature.)
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tiny_rabid_birds
Nocturnal


Registered: 11/08/05
Posts: 15,653
Loc: estados unidos
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Re: Modified monotub - workable? [Re: tokey666]
#5321221 - 02/20/06 07:11 PM (17 years, 11 months ago) |
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So just how cold and dry is it in your room? That might help with the brainstorming a bit.
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Hypercube
80 SRM



Registered: 12/18/05
Posts: 814
Last seen: 11 years, 22 days
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Re: Modified monotub - workable? [Re: tokey666]
#5322365 - 02/20/06 10:58 PM (17 years, 11 months ago) |
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Quote:
tokey666 said: Hmmm...are you in a position to hook up a fan and use perlite in the bottom of your tub and just put the substrate in trays? (See the link in my signature.)
I read that just the other day; great write-up! But I really think that if any air gets directly blown into the chamber it will be too dry, regardless of perlite. Aaaaaaaaaand...
Quote:
tiny_rabid_birds said: So just how cold and dry is it in your room? That might help with the brainstorming a bit.
It gets from 60-66 degrees and a constant 30% rh. The air expelled by the heater is more like 20% rh.
I get the feeling this thread is gonna help someone with their outdoor grow in alaska some day....
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tiny_rabid_birds
Nocturnal


Registered: 11/08/05
Posts: 15,653
Loc: estados unidos
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Re: Modified monotub - workable? [Re: Hypercube]
#5322419 - 02/20/06 11:09 PM (17 years, 11 months ago) |
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Alright.. this might be somewhat far-fetched, but I am trying to think of something. So what if you take some pieces of PVC pipe that're like 1-2in thick and 4-5in long or so, and attach those to the upper set of holes. Then pack the outter part of the tube tight w/ polyfill, and put some saturated perlite in the rest of those tubes? That way when the air is pulled through the top set of holes it's humidified.
I dunno how well that would work, but it's something to ponder over. I'm gonna keep racking my brain though because i really wanna help you find a solution to this for some reason.
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Hypercube
80 SRM



Registered: 12/18/05
Posts: 814
Last seen: 11 years, 22 days
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Interesting....
I just thought of something too: feed the tubes coming from the air pump like so: TUBE->water in bottle, NEXT TUBE fed from top of bottle to water in the bottom of the tub.
Effectively pre-humidifying the water that exits the air stone into the terrarium water.
Thing is, would I even NEED to do this? Is the air coming from the bubble-cup still gonna be dry and fuck up my rh levels?
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tiny_rabid_birds
Nocturnal


Registered: 11/08/05
Posts: 15,653
Loc: estados unidos
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Re: Modified monotub - workable? [Re: Hypercube]
#5322482 - 02/20/06 11:22 PM (17 years, 11 months ago) |
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Wait, so how do you plan on doing the monotub? Traditional mono/double tubs have the bulk substrate sitting directly in the bottom of the tub, which is lined with a trashbag. So in traditional setups there's no bubblers or air pumps. Are you thinking of the poor man's pod [PmP] instead of the monotub?
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onetime
onetime


Registered: 11/13/03
Posts: 3,609
Last seen: 13 years, 1 month
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he is trying to figure out if he will have a enough FAE and RH if he heats the thing up becouse he lives in a igloo.
I like the mono-Tit hybread id'er. It seems the simpplest. It will still stay a tradtional mono tub just with heat. I mean it the bottom most tub would have water then the mono tub inside the top of the mono tub could still have polly fill holes too. that way.
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See? Yes, with my own three eyes. Depression, Misspells , wanting everying thing i cant have haveing nothing i want
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Hypercube
80 SRM



Registered: 12/18/05
Posts: 814
Last seen: 11 years, 22 days
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Should've clarified: I'd put the bubblecup on the bottom of the tub, with the trashbag and subsequent substrate formed around the cup.
Just thought of another idea: rig the cup so that the outgoing air from the cup passes through a column of perlite:

pfffffffffff, go ahead and laugh......
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Edited by Hypercube (02/20/06 11:41 PM)
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tiny_rabid_birds
Nocturnal


Registered: 11/08/05
Posts: 15,653
Loc: estados unidos
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Re: Modified monotub - workable? [Re: Hypercube]
#5322533 - 02/20/06 11:41 PM (17 years, 11 months ago) |
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Hmm.. The bubbler might be a good idea. If you did that, then you wouldn't have to even mess with my silly perlite idea. The only thing i can see that might be wrong with it is that it's standing water in the midst of compost, so I'd be afraid of contams. But the h2o2 should prevent any bacterial growth, so hopefully that wouldn't be a problem.
Since you've got so much compost, maybe you could give several different things a shot.
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Hypercube
80 SRM



Registered: 12/18/05
Posts: 814
Last seen: 11 years, 22 days
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Re: Modified monotub - workable? [Re: onetime]
#5322549 - 02/20/06 11:46 PM (17 years, 11 months ago) |
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Quote:
onetime said: he is trying to figure out if he will have a enough FAE and RH if he heats the thing up becouse he lives in a igloo.
Duh, we all do up here.... 
Thx for the ideas guys, I'm just gonna go ahead with the bubblecup mod I thought up, I'll let you know how it turns out.
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tiny_rabid_birds
Nocturnal


Registered: 11/08/05
Posts: 15,653
Loc: estados unidos
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Re: Modified monotub - workable? [Re: Hypercube]
#5322657 - 02/21/06 12:22 AM (17 years, 11 months ago) |
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Dude, you know I was just thinking, these guys are right. The TiT monotub would work just fine, so long as the inner monotub sat high enough up that the top holes are above the outter tub, and the lower holes are right about the waterline. That'd be more energy efficient too, as the water heater doesn't take nearly as much electricity as space heaters.
Maybe try this with one, and the bubbler cup in another. See how they work out
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Cubenisseur
Mad Props


Registered: 12/04/05
Posts: 1,392
Loc: Indian Land
Last seen: 13 years, 10 months
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I'd really like to try this last method. I'm pretty sure that with a low water line level in the TiT set up, I can still get the AE holes low enough in the mono tub(that is placed inside the TiT) to give goos FAE. I'll plan on trying this method out with a bit of hand fanning as a supplement and let you know how it goes...unless someome else beats me to it!
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tokey666
Let's Build It Instead


Registered: 08/05/05
Posts: 666
Last seen: 2 years, 8 months
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Re: Modified monotub - workable? [Re: Cubenisseur]
#5323303 - 02/21/06 09:14 AM (17 years, 11 months ago) |
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Good stuff! Here is another idea. Why not have two chambers?
Room temps are cold, but not cold enough a TiT/headbomb can't handle. And you are worried about humidity too.
SO, use the same pvc pipe idea that I have, except run the external pipe into ANOTHER tub. One that contains perlite and one that has a heatbomb in it for warm temps. Now when you pull air in with a fan (prolly the only way), the air will come from the other chamber that has 100% humidity and warm air. You don't even have to use pvc, but maybe some large flexible tubing.
Anyway, just throwing it out there.
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Cubenisseur
Mad Props


Registered: 12/04/05
Posts: 1,392
Loc: Indian Land
Last seen: 13 years, 10 months
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Re: Modified monotub - workable? [Re: tokey666]
#5323319 - 02/21/06 09:20 AM (17 years, 11 months ago) |
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Wow, thats a good idea!! Lets keep the ideas going here, I'll definetly be trying something along these lines in the next few weeks.
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Oatman2000
-=Outa Space=-



Registered: 05/10/05
Posts: 2,877
Loc: Planetary Nebula
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Re: Modified monotub - workable? [Re: Cubenisseur]
#5323365 - 02/21/06 09:42 AM (17 years, 11 months ago) |
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i think a tit style, with a air pump/bubblestone would suffice.
just attach it to the side of the tub on the upper portion. you will have to use a large tall tub for this tho......
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Spawning to COIR
My Chocolate Recipe
WBS QUART SPAWN JAR PREPERATION ----------------------------
4-PO-DMT; 4-phosphoryloxy-N,N-dimethltryptamine
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