I have a 20 gallon FW
non planted tank. The light right now is the stock 15w light that came with the hood, it seems kind of bright. My Black Phantom Tetras seem to really hate it as they hide behind things while its on yet as soon as I turn it off they dart right out literally and start swimming around the rest of the tank. They will stay in the same cove behind a driftwood structure and some plants the entire time the light is on and as soon as its off its playtime.
1. Is there a different type of light I can get for the tank that will be less jarring for the tetras? Maybe not so bright?
2. I'm thinking of getting one of those artificial floating philodendrums (sp?) to filter some of the light and also give them someplace to hide besides the back of the tank...they are like 4' long though, seems like it might be excessive for a 20 gallon even if its curled up.