Ahhhhhhh!!! Nitrate!!

[Aquattro]

Well, after a couple doses of rum, it seems less important

In all seriousness, I suspect it's from using a few large foam filter inserts for bio filtration this month. I've started removing these, hopefully the rock is getting close enough to handle the load on it's own.

I'm just following my normal zeo schedule, pretty much trying to copy what I did when I started the last tank. So far it seems good. Other than NO3