I managed to win the war in my tank because luckily I didn't have any large colonies, I was able to take everything out once every few days to dip in Coral RX. I believe it was once every week to 10 days for something like 4-6 weeks? or was it every 4 days for 3 weeks.. in either case It's been over a year so I don't remember the exact details but everything was brown and mad, had a few deaths, but overall I am happy I took the time to take care of it instead of throwing everything out.