nitrate spike overnight

[sean57]

At 5 weeks , two weeks with fish. Nitrites good 0. ph 8.2. Amonia 0 . Nitates 5 ppm.
Did water change last night after testing, bought two corals today checked again and nitrates at 20 pm what happened and when to worry? Overnight?

 

[hdultra]

Nitrate not really a problem at 20 ppm But 20 ppm is were you may want to keep check on it. Some people say at that point they take action and do a Pwc.

 

[sean57]

Should ido one tonight? Just did one on sat ( yesterday ) before I did it it was 5 ppm

 

[hdultra]

Should ido one tonight? Just did one on sat ( yesterday ) before I did it it was 5 ppm

You don't have to 20 ppm is still safe. Anything over 20 ppm Do a 20 to 30% change.

 

[sean57]

But why overnight large change? With a water change at that.............

 

[hdultra]

But why overnight large change? With a water change at that.............

Did you put your new corals in, if yes maybe you stirred something up.

 

[sean57]

Yes just put in today and fed my clowns, haven't fed coral yet and not going to today until I see what morning brings on testing....

 

[hdultra]

Yes just put in today and fed my clowns, haven't fed coral yet and not going to today until I see what morning brings on testing....

Test in the morning post you readings. I'll see them first thing.
With 20 ppm is not a bad reading you'll be ok.

 

[nxb161]

What coral did you buy? Most coral do not require target feeding.

 

[Krypt]

Were you using tap water for your water change? If that was the case, then that's probably where your nitrates came from.

 

[sean57]

No ro water premixed from lfs

 

[sean57]

Also I thought target feeding would be better as far as keeping nitrates down rather than dumping planton in water stream