Hello, everybody! My name is Mike and my youngest (of 4) daughter is Mel, together we have a 58 gal oceanic reef tank. We have been doing a ton of reading on reefkeeping, filtration, water parameters etc...Algae scrubbers have intrigued both of us for some time now. It is that time of year, The Science Fair!! We live near a lake that experiences algae blooms that actually close down some of the beaches in the summer. Mel and I were talking and she asked why we couldn't use an algea scrubber on the lake? Thus started our quest for information on scrubbers and how to go about testing this theory. We decided to fill 2 20gal. tanks with lake water and light the them with an LED fixture we have laying around. One tank will have just a powerhead circulating the water, the other we thought to use an ATS on and monitor parameters in both. The questions are: Would the water need to be heated to grow algea? We have watched dozens of videos on DIY builds and started thinking maybe just buying one would be easier and not very much more $ after buying all the materials needed. Any help? Thanks!