Understood. But you just tested at .25? That is a swing but not too heavy with Nano..... you are more apt to changes obviously, but soon as you go down the dose route, be prepared to do it constant, as opposed to monitoring and maintaining with regular water changes. Think about it, the swing....has all been ok though it? .1 is your highest and it freaked you a bit, All good, been there. As I asked before, wondering what you are feeding? Please be specific , thanks.I have a nano tank so the levels fluctuate a lot I rather it be lower so it can be safer in case it raises even more
And here is a potential crux.... all frozen not same, some highly elevated in Phos.I dosed half of the recommended amount so hopefully it lowers it slower, I feed a quarter of a cube of frozen food, I recently had to change my ro filters because they were disgusting.