I already have one Ray 2 on my 25cube. I am wondering for more spread if I should get a second Ray 2 or use a planted + in the back where the substrate will be higher. The only thing is the planted + is 20inches on a 18inch tank and I do not want the light shinning down the side of the tank. Do you think I would be better off with 2 Ray 2's?
How high is the substrate?
Are the lamps sitting on the rim?
Does the tank have co2 injected?
I would recommend two planted+ but I don't recall if it comes in 18" length.
The substrate is average of 2inches but angled high in a hill in far back left corner. The lamps are sitting on the provided legs from Finnex. Yes I have pressurized CO2. High light plants...Glosso, Ludwigia's, Rotala, etc.