Quote Originally Posted by alton
The indirect lighting from the classroom fixtures plus sunlight from windows could be creating it. I had to disconnect 2 lights in my office and change the lamps out to new to stop the problems I was having. Take RO water put it in a bucket and put it in the sun and it will grow algae. Add creatures to the tank that eat it to control it, good luck
Light does not cause algae problems, nutrients do. The usual suspect is phosphates. Phosphate test kits are not a good indicator. Most test kits do not test for all phosphates, just one of the two forms it exists in in our water. The best test for phosphates is fuzzy green stuff growing in the tank.

The problem I have with turbo snails is they prefer to graze on the algae on smooth services such as the glass. Personally, I prefer micro blue leg hermits for chowing down on hair algae.