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OfflineGanjaNamja
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Correct PMP Lava Rocks?
    #2663145 - 05/11/04 02:32 PM (12 years, 9 months ago)

hey all...a friend went to get some lava rocks for his PMP to use as a substitute for geolite...he got this bag at lowes for 2.99 but isn't sure if this is the right kind or should he just return it...here are pics





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Invisiblee7c
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Registered: 04/29/03
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2663307 - 05/11/04 03:07 PM (12 years, 9 months ago)

I got a bag of lava rocks from home depot for $4.50cdn and they didn't work at all, I've since replaced them with 3" of perlite with a top layer of the red lava rocks to keep it clean. They looked like yours

I plan on using them to edge the walkway heh


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OfflineGanjaNamja
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2663427 - 05/11/04 03:36 PM (12 years, 9 months ago)

dam...he just cleaned them and everything too...anyone else have any better news for me?


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OfflineRoseM
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2663459 - 05/11/04 03:41 PM (12 years, 9 months ago)

They should work fine.


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OfflineGanjaNamja
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2664375 - 05/11/04 07:16 PM (12 years, 9 months ago)

anyone else with experience with these rocks?


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Invisibleniteowl
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2665253 - 05/11/04 10:17 PM (12 years, 9 months ago)

I have been using lava rocks for my PMP. I had to get some galvanized fencing for the cakes to have something level to sit on.

Here is a pix of me washing the rocks.



Setting the rocks in teh F/C



Fencing on top



Full of cakes



I think I got 2 50lb bags for about $10 at Lowes. I got the fencing there too.


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Live for the moment you are in now
Don't be bogged down by your past
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OfflineDr. Greenthumb
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Re: Correct PMP Lava Rocks? [Re: niteowl]
    #2665423 - 05/11/04 10:55 PM (12 years, 9 months ago)

How do you go about fanning them? Or do you even have to with that setup? How about any holes for air to escape?


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Invisibleniteowl
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Re: Correct PMP Lava Rocks? [Re: Dr. Greenthumb]
    #2665481 - 05/11/04 11:06 PM (12 years, 9 months ago)

If your air pump is big enuf, then fanning isnt needed. The lids on the containers arent air tight so the air will flow out the top. Just take the lid off a couple of times a day for light.


--------------------
Live for the moment you are in now
Don't be bogged down by your past
Don't be afraid of what lies in your future


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OfflineDr. Greenthumb
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Re: Correct PMP Lava Rocks? [Re: niteowl]
    #2665508 - 05/11/04 11:11 PM (12 years, 9 months ago)

Thanks for the reply but I found that big ass thread. Looks like all the info I need is in here . I'm deff building one of these after I get the basics down.


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InvisibleOldSpice
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2665523 - 05/11/04 11:13 PM (12 years, 9 months ago)

Quote:

GanjaNamja said:
anyone else with experience with these rocks?



Never used them just cased...ask Maga he knows


--------------------
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OfflineGanjaNamja
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2665594 - 05/11/04 11:24 PM (12 years, 9 months ago)

yeah mine looks like yours nightowl except yours is in a lot smaller pieces,...i didn't see any other brands of lava rock at lowes...how much water did you put in yours and how much lava rock? what is your rh like? u got air stones in there? im gonna get air stones and an air pump later on in the week but just wanna use the pmp temporarily


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Invisibleniteowl
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2665780 - 05/11/04 11:59 PM (12 years, 9 months ago)

I have about 4-5in of rocks. I keep the water around the same level as the rocks.

The rh stays above 90.

I have 2 airstones with a big pump hooked up to each airstone. I have had good results using lava rocks. I couldnt find geolite anywhere and had to use the rocks.


--------------------
Live for the moment you are in now
Don't be bogged down by your past
Don't be afraid of what lies in your future


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InvisibleMagashM
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2665832 - 05/12/04 12:14 AM (12 years, 9 months ago)

Use the lava rocks they will work fine. The closer the the size of geolite the better so that means the smaller ones. (Don't panic if you got the big ones they will work fine small ones are easier for the cakes to reast on) Set it up exactly like you would with geolite. 4 inches of rocks and 3 1/2 to 3 inches of water.

If your gonna put exhaust hole put them in the top. I make the holes about a inch big two of them. I cut two pieces of rubber and put a screw threw them, I then mount them in a way that each hole has a piece of rubber that can slide over it. You can make the holes different sizes with the sliding rubber piece and different size holes means you can adjust the amount of humidity.

The fundamental principal behind using air entrainment is to sufficiently mix the two (fresh air and stale air) together and then re-distribute them back into the environment in a more balanced way that is then more beneficial to the mushroom crop. Without this sufficient mixing of the gasses present within the grow space, the crops will remain stunted and will likely never reach their optimum potential.

With the poormans pod, the settling co2 air is met and diffused by a curtain of fresh air rising from beneath the Geo-lite surface. This rising flow of air is created from the air diffuser rod situated below the Geo-lite surface, which is powered by the air pump. The rising air pattern not only prohibits the heavier co2 air from settling down onto the bottom surface as usual but it also simultaneously diffuses the co2 with fresh air as it is distributed back into the environment or grow space where it can be put to good use.

In this way, the poor mans pod creates the same desired phenomenon as offered by more conventional means of air entrainment found in much larger-scale commercial applications where a mixing box is commonly used to accomplish this important task.


--------------------
All creatures tremble when faced with violence. All creatures fear death, all love life. If we can only see ourselves in others, then how could we possibly hurt another creature?


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OfflineGanjaNamja
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2668092 - 05/12/04 12:33 PM (12 years, 9 months ago)

do they work well with less than 4 inches? my grow chamber is kinda small height wise and i am only using 1.5 inches right now.


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InvisibleMagashM
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Re: Correct PMP Lava Rocks? [Re: GanjaNamja]
    #2668393 - 05/12/04 01:58 PM (12 years, 9 months ago)

Hmmm...couldn't tell ya and I'm not gonna try and give you one if I never tried it. Now perlite has been done with 1 1/2 inches many times. May has well go with a tested method.


--------------------
All creatures tremble when faced with violence. All creatures fear death, all love life. If we can only see ourselves in others, then how could we possibly hurt another creature?


:growingweed: Join us at the Growery! :growingweed:


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OfflineDr. Greenthumb
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Re: Correct PMP Lava Rocks? [Re: Magash]
    #2677469 - 05/14/04 12:40 PM (12 years, 9 months ago)

I was at a local home store yesterday and found a couple differnt sizes of lava rocks.  They had golf ball size lava rocks and smaller marble sized lava "pebbles".  I'm assuming the pebbles would be better since they could stack better and make a pretty flat surface for the cakes, right?  $2.50/cubic foot. :smile:

So just rinse them off good then boil them for a while?  How long do you need to boil them?


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Invisibleniteowl
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Re: Correct PMP Lava Rocks? [Re: Dr. Greenthumb]
    #2678578 - 05/14/04 04:50 PM (12 years, 9 months ago)

I just washed mine in water with a little bleach.


--------------------
Live for the moment you are in now
Don't be bogged down by your past
Don't be afraid of what lies in your future


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Amazon Shop for: Air Pump, Air Stone, Perlite, Scales

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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