Rainbow Fish & decrease in Ferts?

[FSEMTB2]

With large fish in a tank like Rainbows, do you all recommended reducing ferts since the fish produce a lot of waste?

 

[newfound77951]

I have some big rainbows in my tank, and the only thing I find that I need a little less of is nitrate. I still need to dose phosphate occasionally, and the fish won't help with any of the other nutrients.

 

[zenkatydid]

you should always take your bioload into account when dosing, regardless of what's in there. a heavily-stocked tank will need less ferts than an empty tank. you should be doing tests to see what the levels are and adjust your dosing accordingly.