markalot
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I have started dosing it again to bring it down. I think I will find a maintenance dose like you.
I need to do a sump cleaning. I might have too much detritus build up or something along those lines.
I turkey baster it and my nitrate reactor back into the tank. Perhaps someday I will pay for keeping the fish poo in the tank but at least I will know what caused it this time. At the end of my tank troubles I did a number of deep vaccing of my sandbed which seemed to improve things each time I did it along with a water change.