I have used the Bio-reef kit when I switched to my new tank and it seemed to keep the algae symptoms away. Then that tank cracked. So I set up a new one identical to it a week later and only had 2 viles of the bio-digest and I now have an algae problem. I did notice no issues with ricordea with use of any of the chems. I haven't used the Reef booster yet cause of the algae issue, I also didn't notice any real coloring up of the ricordea, they pretty much stayed the same......