Hey all so I have a tank set up for growing zoa and softy’s only. The the only thing I don’t like about the parameters right now is the the NO3 is at 3ppm instead of the 10-15 I’d like. Other than that parameters all in check. It started with with one zoa curling up and puking its guts out and now it’s making its way through the tank. These are all high end zoa for the lost part so the losses are piling up. I’ve never had this happen in the 15 years I’ve been reefing so any help or guidance is much appreciated. Thanks guys.