Zero PPM.....?

[slimfl08]

So I picked up a 20 gallon tank that was previously set up with very well cured live rock. I cycled the tank keeping an eye on parameters and it has stayed at 0 PPM for Ammonia and Nitrate. Is this common with a previously established tank? I filled with RO/DI water and used instant ocean salt to get my salinity to 1.025.

 

[Fudsey]

Was there anything in the tank to give the tank any ammonia in the 1st place?

 

[Maggie321]

Did the rocks stay wet?

 

[slimfl08]

Did the rocks stay wet?

Yep, with the water they came out of.

 

[slimfl08]

Was there anything in the tank to give the tank any ammonia in the 1st place?

The previous owner had a fish in it. I did not want the fish when I purchased it.

 

[Maggie321]

Yep, with the water they came out of.

You had instant cycle. If the rocks stayed wet and didn't let sit to get stagnant for a long period of time. They were already colonized with the nitrifying bacteria.

 

[Tautog]

Yes, that’s normal, my tank never cycled. I also started with very good LR

 

[slimfl08]

You had instant cycle. If the rocks stayed wet and didn't let sit to get stagnant for a long period of time. They were already colonized with the nitrifying bacteria.

Ahhh sweet! Thanks for the info. I may add a Chromis or two and check my levels in a couple days.

 

[slimfl08]

Yes, that’s normal, my tank never cycled. I also started with very good LR

Nice. I guess I got lucky. The price wasn't bad either. Got a smoking deal.