Backyard Aquaponics
A place to discuss aquaponics

having problems with a few of my plants and searching turned up a variety of different causes so I'm still confused. Answers range from too much water to disease to mineral deficiencies.
System is 2.5 months old, constant flood, returning consistent ph 7.2-7.4 , ammonia 0, nitrite 0
nitrate 40-80.
I have not added any supplements except for Seasol every 2 weeks. I did put some crushed eggshell to buffer pH

1. black edges on leaves. this is happening on all eggplant and 2 basil(other basil in same growbed not affected )





2. Rocket leaves going yellow. All other plants are doing fine as you can see. It's only the rocket that looks not happy. Every new rocket leaf comes up yellow but is not going to seed



I'm going to get some chelated iron but is there anything else I should do?

Looks like a potassium overload to me. Cut back on the seasol a bit.
No clue on the yellow rocket leaves sorry

Dunno why I bother

sorry mantis I do appreciate your answer thanks
anyone have ideas on the yellow rocket?