Cooking LR: Nitrates not going down

vessxpress1 · 02/17/2007, 03:06 PM

My liverock has been cooking in a dark tub for 48 days. I've done 3, 100% water changes and the nitrates are back up at 15 ppm and not going down. It's about 60 lbs of rock. How much longer could this take?

lakee911 · 02/17/2007, 04:02 PM

You probably need to do less of a water change more often. Maybe 25-50% every week, in my opinion. The sudden change from a 100% water change would probably cause some die off and cause the elevated nitrates. Do you blow off the rocks and turn them regularly and what not?

02/17/2007, 03:06 PM	#1
vessxpress1 Premium Member Join Date: Aug 2005 Location: NW IL Posts: 1,603	Cooking LR: Nitrates not going down My liverock has been cooking in a dark tub for 48 days. I've done 3, 100% water changes and the nitrates are back up at 15 ppm and not going down. It's about 60 lbs of rock. How much longer could this take?

02/17/2007, 04:02 PM	#2
lakee911 Registered Member Join Date: Dec 2005 Location: Columbus, OH Posts: 1,988	You probably need to do less of a water change more often. Maybe 25-50% every week, in my opinion. The sudden change from a 100% water change would probably cause some die off and cause the elevated nitrates. Do you blow off the rocks and turn them regularly and what not?