01-23-2008, 08:25 AM
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ph problem in new tank
Here's the situation:
penguin 150 filter
Tank is on its 9th day. Had it sitting 48 hrs then added 4 zebra danios. Initial ph was 7.2 which was the same as the tap. It was stable at 7.2 for 7 days. I did a 10% water change on 7th day. Yesterday I check my ph, it dropped to 6.6. Hmm weird, so I check the tap again and its 6.6!! I tested each twice to make sure, same results. This morning I check tank again and its now at 6. Checked tap and its neutral!! In a panic I went to WM and bought a ph stabilizer and added half the amount so as not to make the ph rise too quickly. Its at 6.6 right now. After close inspection of the stabilizer bottle I read it also removes amonia to my horror. If I keep killing any trace amonia my tank will never cycle...
What could cause the ph to drop so much in my tank?
Anybody else have problems with their tap water changing ph on a daily basis?
I have a master test kit bought at petsmart for 25$.