I just used a month ago and I treated tank for the initial 6 day treatment then every 2 day's dosed for a total of 2 weeks. Then after did first water change in 3 year's, replaced gfo/carbon media, cleaned skimmer and by 3rd week 99.8% gone. For over a year in a half was just controlling bubble alage with emeralds and manually removing although it got the better hand entirely covering my gyre pump and frag racks that crabs couldn't reach. It exploded in like 2 month's from always being able to count them to thousands. Nothing a negative all positive

️ % best additive I've ever seen or heard of. I always try natural processes first and usually skeptical of cure-alls, but dang I'm sold. Brightwell razor the win... I just wish I had taken before and after pictures