When you place new plants, it's tempting to overdose with fertilizer to give them a good start, but you don't want to provide too many resources without growing plants to use them or you're asking for an algae outbreak (especially if you have strong lights and/or no CO2 supplementation).
When you place new plants, it's tempting to overdose with fertilizer to give them a good start, but you don't want to provide too many resources without growing plants to use them or you're asking for an algae outbreak (especially if you have strong lights and/or no CO2 supplementation). Dosing a little bit and building up as needed is the safer way to go. Also, trim off dead/dying leaves when you're planting.