is that true *** no one warned me and iv been fighting algae with an established tank well there goes my 75.25 bulb im goin to get deiff bulb to replace it.
I've heard of actinics causing algae issues, but I think the main issue is that they are close to worthless for plants, thus they can't out compete algae. I haven't seen any evidence that links actinics directly with algae growth.