I have a 24 inch Planted+ on my 20g and it works great. No algae, clear water. I have water sprite that grows like a weed so I think that and a 200gph canister helps.
So how could I determine with the Ray fixtures which ones would be high light, or low light? When it comes to LEDs, what should a person usually have to look for? Thanks for your reply. :icon_smil