Yes I started with instant ocean (purple box) and had to dose quite a bit. I switched to reef crystals (orange box) and rarely dosed. IO I was testing at 350, 6, 1120. I switched back so I could dose more often. I noticed a decrease in growth (particularly sps) when I used RC. My acans actually stopped growing at all as well. Zoa and paly sure did take off though. Long story short, I get much better results when I can dose my 2 part. I'm using oceans blend and it contains every major and minor trace element. I really like this stuff and will continue to pay more for it rather than diy 2 part and mag.