risk

Hello All, I have some fish in quarantine and after watching for a week I started slowly raising cupramine to theopathic levels. Fast forward 14 days and I notice last night my concentration dropped to close to under .35 from around .5. Its pretty hard to read the test kit. I mistakenly mixed...

Let me preface by saying that I know nothing about fish tanks. I would like to clean my floors near a saltwater fish tank. My husband seems to think it will kill all the corals in his tank if I use any amount of chemicals on the floors, near his tank. To further elaborate, he has a 210g...