My resevoir sits above my hot water heater of my house. I too have a high rez. temp. Not sure how high but it's up there. I have had some problems associated with that like rapid increase in pH, foamy rez, etc. Be careful with the organic supplements like stuff with fish shit and so on. I use Floraliscious. It can be as beneficial to your plants as it can be bad for resevoir stability if not watched closely.

MY suggestion is to raise it off the ground a few inches like someone noted, and run airstones in your resevoir. I use an air pump with two air outlets and run two 4" airstones, one on either end of the rez. That may aid in cooling it and will also prolong the health of your rez. Give it a shot man. You will learn a lot for the next grow even if you don't succeed.



She's a Grapefruit feminised (Female Seeds .nl)