[Hugh R]

I have a 50 gallon tank with an 8" leopard Pleco and about 30 tetras of various and red platys. I get a little green algae on the plexiglas, the fish lights are on about 16 hours per day, no direct sunlight. It says you have a power filter. Fill the biobag completely with activated charcoal not just one of those little bags of charcoal they give you. Rinse the bag with the charcoal thoroughly before use. Rinse weekly, change every two weeks for such a small tank. I also have an under gravel system with two power heads that pull water through the gravel up a tube to the powerheads and also pulls air into the water in the powerhead. Depending on how hard your water is, tap water is fine but not downstream of a softener. Use the nitrogen/chlorine knockout chemical before adding the water. Make sure the water is room temperature. Change at least 20% of the water per month. Buy and use a gravel vacuum, it's a siphon and you use it when changing the water.