Macro Nutrients in a stocked Tank
Just wondering if dosing with the big 3 (N,P,K) are necessary in a planted tank that is stocked with fish because wouldn't the fish and the food you feed them supply the plants the NPK they require?
Right now I dose with Seachem Flourish, Iron, Excel, Trace and P. I found that my plants did beautifully with Flourish, Iron and Excel alone but I thought I'd give the Trace and P a try just to see what would happen. I didn't bother with N and K because I thought those two would get supplied by the fish for sure but not sure for the P. The only noticeable difference that I found with the Trace and P was that my algae growth rate increased a bit but nothing out of control. I'm guessing it's the P that's causing the increase in algae growth.
So I've decided to just go with Flourish, Iron, Excel, Trace and I'm gonna give this Advance a try.
As a side note I did test my water parameters and the NPK checked out perfectly within parameters and in the proper ratios before I dosed with P.