Thanks. Yes I have put a insulation type blanket around the fish tank. And a tarp on top of the fish tank and sump tank. Algae levels are slowly coming down now. When I first installed them my Nitrite. Nitrate. And ammonia. Levels increased. They are all back to normal now. Zero. PH 6.4/6.7. It never changes. I keep my KH at 4ppm. By adding one spoonful of calcium/carbonates every three weeks. I have added little bits of Magnesium. Iron and Potassium. For my tomatoes/tomato’s . there starting to flower again. And producing fruit.

Alls good so far. I have read the first two pages of your post about your bells not working right? I built my system just using you tube clips. It took some time to work it out. But both my bells are at different heights. Work fine now.