Aquaponics, nutrients advice

Hi, I have decided to use an aquaponic system to grow my cannabis. Sorry if i posted in the wrong area, i couldnt find an aquaponics area. I have been researching as much as possible on people who have previously succeeded, but i can not understand what nutrients I will need to add during the flowering stage. My plants are doing fine vegetating at the moment but I am scared for when I do the 12/12 switch. Anyone who is experienced can you give me any advice on what I should do? I have a 2 year old system with approx 15 adult silver perch.

Is it drain to waste or recirculating?

recirculates, like an ebb and flow system.

Ok,cool. What fish , tank size? In smaller tanks it's harder to feed in preferred concentrations and also not hurt the fish. I've added things like kelp, and other sea weeds. If the plants look healthy they will flower just fine for ya. Things to watch out for are solid waste accumulation, and temps/o2. Hope this helps.

15 adult silver perch fish, in a 12(approx) cubic yard tank, the system runs perfectly with high oxygen levels and good temp and the plants do look healthy, it should be a while before i start the flowering cycle. I have just heard that aquaponics have low p and k levels and will not provide enough for the flowering. I have no idea how to fix this problem if it applies to me. Off topic, How do I make a quote that shows up in every post I make like your " no nonsense makes no sense at all"? i am new to rollitup \. thankyou.

Seaweeds can boost the p and k .