Finding nitrates

[Myka]

Originally Posted by Proteus

Not really poking to reduce nitrates just looking to understand where they are comming from. If issue did arise in future I would know the root. I know the tank is new. Just not recently started zeo,
The tank was up running for over a year. Then transferred entirely to my house. The rock bin (rubbermaid) did split while setting up tank leaving rock out of water for a day.

Has the nitrate been increasing or decreasing since you set it back up? I asked you before if there was detritus settling in the rocks - that could be the cause. You don't need carbon dosing to achieve "0" nitrate and phosphate, so you're wise to be looking for the cause/difference between this tank and your other one.