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Moderator: Matt

By Adelaide
Posts:  538
Joined:  Wed Apr 06, 2011 10:05 pm
#276920
Hi all. I've just purchased my first heli (heterodoxa) and it will be here this Friday! To prepare for my newest addition I've built an evaporative cooling grow chamber that works the same way a swamp cooler does. Questions about artificial lighting and cooling systems seem very common; so I've decided to make a post about my project. As an engineer, I wanted something practical (read "cheap") that would still give me great results. I've included prices and information on where I got everything I used.

There is about 5" of water beneath the egg crate and all of it is flowing. Water is pumped from the bottom right corner of the tank to the top left corner where it falls over the mesh. The computer fan takes ambient air and blows it through the mesh with water flowing through it and into the tank. When the air flows through the mesh with the falling water it is cooled.

I have two of my neps in there for now and orchids mounted on the back panel egg crate.

Hope this might help some people out and as always, any feedback and tips are welcome.

Happy growing.

P.S.I don't have a *working* thermometer and humidity gauge yet, but will update with specs when I get one, but I can feel cool air coming from the exhaust.

Components:
40 gallon aquarium tank - bought used on OfferUp, $25 (OfferUp is great for getting cheap tanks)
Tank stand - bought used on OfferUp, $25
tank and stand.jpg
tank and stand.jpg (609.99 KiB) Viewed 1112 times
Egg crate - Lowe's, $12
Egg crate.jpg
Egg crate.jpg (1.21 MiB) Viewed 1112 times
PVC piping - Lowe's, $3.21 (for 10ft, I used about 3 ft)
(x2) Excelvan 45W LED lighting panels - ebay, $52 total
140mm high flow computer fan - $7
Fountain pump - Lowe's, $20
pump.jpg
pump.jpg (839.72 KiB) Viewed 1112 times
3/8" ID Tubing - Lowe's, $7
tubing.jpg
tubing.jpg (703.86 KiB) Viewed 1112 times
Plexi glass - Lowe's, $10
plexi.jpg
plexi.jpg (953.55 KiB) Viewed 1112 times
Plastic bin - Lowe's, $3
Filter mesh - Pet Supplies Plus, $3
mesh 2.jpg
mesh 2.jpg (797.2 KiB) Viewed 1112 times
Total: $167.21

Final product:

Lights on
The glass is a bit cloudy (one of the bonuses of a pre-owned tank xD).
whole thing 2.jpg
whole thing 2.jpg (706.47 KiB) Viewed 1112 times
Lights off
set-up no light.jpg
set-up no light.jpg (860.38 KiB) Viewed 1112 times
Inside
inside.jpg
inside.jpg (540.85 KiB) Viewed 1112 times

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