Sounds like your tanks going through a nitrate spike probably caused from cleaning your filter out too much BB has been lost , you need to get the nitrates level down asap have you been using prime when doing wc's ? Try increase the wc's to 50% .
How's the jar doing ?
Ya I'm been using prime and api quickstart when doing water change. I'll do more % tomorrow. My jardini is doing alright eatting when I feed him.