My tank went down a week ago. I'm sure some of you read about this under another thread. As of right now the only thing left in my tank is ramshorns. I feel that now would be a good time to wipe them out once and for all. What is the safest way to do this without causing any permanent damage to my plants, filters, etc?? I don't plan on moving any livestock back into the tank for a month or so. I also want to make sure that there will be no issues with adding my nerite and shrimp back into the tank in a few weeks.