Help

[bruno21447]

My tank all the sudden is having a nitrire problem it is .03
nitrates are 20
ammonia .03

everything else is in range.
I noticed when i came home my scoly receding pretty fast from what it looked like last night.
I did a %30 water change anything else that will help?

Not sure what would of caused the sudden spike. tank has been up and running for bout 6 months its a 225 gallon. have maybe 15 fish most small sized.

I added some sand that was cleaned in the sump and main display about 3 weeks ago. no changes since then

 

[pumarjr]

I think the sand is causing a mini cycle.

 

[bruno21447]

what is not making sense is I have a welso and cynarina are puffed up doin fine. usually my welso is the picky one.

 

[shimin]

Bump

 

[ThaBeast]

Change your carbon or add some if you aren't running any currently to help with the immediate problem. I take it from your post you have accounted for all fish and cuc? When you say sand was cleaned, was it fresh sand that you rinsed or used sand?

 

[ThaBeast]

also wet skim and reduce fish feeding, stop coral feeding until ammonia and nitrite 0