Planted Tank Guru
Join Date: Dec 2012
Location: Hot Springs Ar. 71901
Two T5 bulbs on an 18" tall tank is too much for a non injected tank. Don't know if the
injected is enough to off set that.
Algae can't store energy like regular plants. The split photo period work against the algae. But 4 hrs of dark works better than less hrs of dark. But make it 3.5 then off for at least 4 and then 3.5 for a total of 7. This will help a little/w the two T5 bulbs part.
Don't know how much PAR you have with the flood lights but Anubias will get GSA on their very slow growing leaves if not put in shade if the light is just a bit to high.
Also have read a few threads which claim they had GSA but when they raised the KH2PO4 dose level it went away. If you are doing EI dosing it may be easy to do 1.5 times regular the amount of it in there.
The shortest distance between any two points is a straight line...in the opposite direction...