NovAqua Plus is a good conditioner. Amquel plus like.. claims to detoxify nitrites and nitrates in case of a cycle break down. I wouldn't use it, or just keep it around for emergencies if you like. Just keep up on water changes and the same thing will occur without adding more chemicals. I've heard people claim their smooth skin and invertebrates died suddenly after using it, and I've also read reports of it really messing up ph, but I really have no experience with it and I don't know if those claims can be trusted.
Last edited by callistra; 12-24-2012 at 01:25 PM.