I have the 12L with the Marineland 36" double brights. Had to put a 1/4" plexi cover on it because of 2 cats and jumping fish. No CO2 but not much luck with plants so far. Tank has been set up for 3 months and I'm just now getting algae under control with Otos and Nerites. I have the light fixture directly on top of the lid and love the color and shimmer but it does keep the tank temp rather high at about 78 degrees F. The location of the tank doesn't allow me to raise the fixture. I've recently removed my melting mid to high light plants (that seem to be doing well in my 6 gallon Eheim shrimp tank) and replaced with low light plants. Hope they will do better. I want to make it a low maintenance tank but don't seem to have a green thumb with this setup. I have it set up on top of a roll top desk so I can't raise the lighting as I have to look up to see the tank and looking directly into LEDs is no fun. Is the light too bright for anubias and crypts (or not bright enough thru the plexi)? Is the temp too warm? Do I need to dose? Thanks.
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