That's what I'm going to try and do first. I've only got three medium fish in my 90 so we'll see if I feed them an extra time per day and also up my reef roids what will happen. But I do roids twice a week and the fish get meat and cube everyday and I don't register anything yet. Was also running GFO which I stopped not long ago.
I own the Brightwell products, a word of warning is that the phosphorous one requires shaking prior to each use. I prefer products that don't require require mixing, which allows for automated dosing.
I use the Brightwell products. The only thing I don't like about them is the childproof caps are next to impossible to open without crushing in the bottle since they require so much force.