ISSUES Addressed here: High Reservoir Temperature & Burning my leaves with foil
I had an issue with the aluminum foil burning the leaves of my plants. I had covered my reservoir with the foil to keep light out. I did not know foil would focus intense light to one spot on the plant and cook it.
In the beginning I germinated and sprouted 5 healthy seeds. I immediately cooked 2 of them with 200w of T5 light 1" from the new seedlings. Lesson learned.
Anyhow, Later on I was getting brown spots on on of my leaves which quickly progressed
Along with cooking my seedlings And burning one of the survivors, my reservoir temperature was averaging between 75°f and 80°f. I was quickly told that the reservoir temperature needed to be lowered to between 65°f-70°f or I was going to have a good chance of being plagued with ROOT ROT.
Here is my fix:
First I covered the foil with Duct Tape. No more laser beam light cooking my leaves. (Easy Enough)
Now I had to figure out how to cool the Reservoir. Since I was cooling my tent with a portable A/C unit and dont have the money to buy a water chiller, I got a 27 gallon tote from home depot (on sale $9). I created a base out of 2x4s for my 15 gallon tote to sit on (inside of the 27 gallon tote) and would also allow plenty of airflow underneath. I set my 15 gallon Reservoir tote down on the base inside the 27 gallon tote.
Next I built a custom air handler to fit into the long narrow space between the two totes. Once again I am poor so I make do with what i have. I happen to have a half a roll of duct tape (left from the roll used to cover the lid of the reservoir) and a skinny cardboard box.
then I put it all together!
Before and after:
This Solved the burning leaves with foil and dropped my Reservoir temperature down to 65°f at lights off and 70°f when the lights are on. The only issue I am having with this is the A/C air is pushing up under my Reservoir lid and blowing cold air across the surface and up through the grow medium. Most of it is venting out of the empty net pot holes. It pops the cardboard disc up out of the pots. I am not even sure this is an isue. The plants have not responded negatively that i can tell so... I guess we will see.