will cause red plants to go green in some cases. Your algal problems are likely caused by a DEFICIENCY of a macro nutrient though.
Just a WAG but I would increase K
dosing. The most common EI recipes dose little K
deficiency can cause N or PO4
to not be taken up by plants allowing them to build up.
Excess macros or cheap lights will NOT cause algae problems. I have both instances on 3 active tanks that are 98% or better algae free.
Look at CO2
, look for a macro deficiency, do a couple of extra water changes to reset the tank.
What type of algae is taking off in your tank? Different inbalances will let different types take hold.