Cycling live rock

[Pete polyp]

It will, but not that much in my experience.

I have to dose potassium nitrate in my tank. The only nutrient removal I have is live rock

 

[glb]

I have to dose potassium nitrate in my tank. The only nutrient removal I have is live rock

I hear you, but at the end of a cycle sometimes the nitrate is higher than it will ever be again. It's never been a problem for me in my saltwater tank but sometimes it happens.

 

[Breakthecycle2]

Your nitrates dropped from 80-160 to 20? Are you sure? That doesn't seem possible without doing a big water change. And yes, your nitrites should go down first. Nitrates stay in the water so water changes are the only way to bring them down unless you have a skimmer or some sort of nitrate reducing media. Test error maybe?

I know. It seems weird to me, but it has dropped that much, nitrites have not.

 

[glb]

I know. It seems weird to me, but it has dropped that much, nitrites have not.

Could be a testing error. Are you using API? I still do for my FW and sometimes the test doesn't change colors. Try again and see what you get.

 

[Breakthecycle2]

The NItrates are 40PPM and Nitrites are 5PPM.