RE: How many of you use LEDs for freshwater?
I had a DIY fixture using 10 of the cree 3watt LEDs on a dimmable mean well driver. I haven't had much luck with them as of yet. Been slowly eliminating variables as to what the problem is. I'm changing substrate. The lights will be the last change. As of now I only have the lights at 50% and its hanging from 12" from the tank. Problem with smaller tanks is the whole watt per gallon rule seems to change from what I've been reading, but watts aren't really useful. I've used LEDs on reefs, aquaponically, hydroponically, and aeroponically with great results. This isn't my first planted tank, but its the first one I used with LEDs on and its not going to well. Maybe I'm doing something wrong. Who knows. Though I can tell you LEDs aren't the newest thing on the market, they are still underused fixtures.