Yellowing leaves means a lack of Potassium.
Potassium is much needed by plants during initial setup when they are acclimatising to the new environment.
In Takashi Amano's tanks, ADA Brighty K (Potassium and anti-chlorine) is used from the start of any tank before any other ferts are added.
ok.. ive been dosing my tank with "plant gro - iron enriched" and im reading on the analysis part of the bottle and it says... crap! no K! damnit! :twisted: whats a good brand that you can suggest? ada brighty k? i dont think we have that here :? .. what other additives do i need? HELP! gonna get them tomorrow.. asap!
I don't dose K by itself. I'm dosing KNO3 and the K is provided as well, which is usually enough. I think little overdoses of K is harmless as it does not contribute to algae growth as much as N and P.
Just follow the instructions on the bottle of whatever brand you get.
Maybe the other members can give some advice as well.