i'm also a newbie that's why i need to know if somebody tried this already: how about using dry ice and fans? would it work to cool our tank? will there be any implications to our water condition and livestocks? i'm just wondering..
(dry ice= solidified carbon dioxide)
(Photosynthesis=The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct)