I've been on a number of forums. The rep from UWC says the bacteria will reduce NO3 & PO4 and at the same time it will attack the various algaes in the tank. For me I noticed within 24 hours that my water was crystal clear. Now I've been using it for about a month. I tried the Kent Tech M. It knocked the Bryopsis down somewhat but never eliminated it. I killed all my snails in the process. The Bryopsis grew back once I stopped. I used Tech M for around 3 months. As the Bryopsis regrew it had a strong grip on my rocks. I could pull on the Bryopsis and lift the rocks out of my tank. Now the Bryopsis pulls right off the rocks. So is the bacteria attcking it directly, it sure does look like it. Also the bubble algae I have is fading. Now I have one spot of Bryopsis that is fighting back. It is in the highest flow area, but even that one section is slowly shrinking. From what I read, your tank could go through stages of looking better, then maybe not change much, but overtime it will get better. I'm sold on it. Again it's a tool and not a crutch. I'm still doing my normal husbandry, cleaning the sand, water changes, etc. I've also started using it in my 45 gallon where I have a little hair algae. I am only dosing 1x/week in that tank vs 2x/week in my nano. The hair algae is disappearing slowly in spots. It's almost as if the weaker algae growths disappear first.
