That's awesome! I feel like I'm over-analyzing as well. I'm just concerned about the health of my fish and am trying to do my best to not over-stress them. Out of curiousity, how many fish did you have and how big of a tank?I'm a newbie whos tank has only been cycled a week. I was doing the same as you. Fishy cycle. Obsessing over measurements. Doing 70% pwc daily or more. testing my water 3x day. Questioning the use of Prime and my tap water (my tap often has nitrates I learned). The holiday weekend came up and I had too much stress, so I said "sorry fish, your on your own for a while". I tested my water 3 days later, and I've been 0 since. What a joy!
I found the culprit for my ph problem. I was doing a lot of ph testing with things I put into my tank and the culprit was the prazipro ([FONT=Verdana, Arial, Helvetica]Praziquantel).[/FONT] It is a VERY strong oxidizing agent! With one drop, it lowered my ph on the test kit to 6.8 from 7.6.
I was actually doing a drop of the prazipro in the API 5ml test vile. Kind of scary- my tank now reads a ph of 6.0 (could be lower as 6.0 is as low as it gets). I HOPE the prazipro just interferes with the ph test and doesn't actually change the ph.Wow... that's a big pH change for one drop. Isn't the dose a teaspoon per 20g?? Maybe you need more buffers in your tank. With all the WCs, you might be very low on salts. Or something in there interacts with the pH indicator. What's your water's hardness?
Eh, I succumbed today and did a 50% water change. Nitrites was approaching 3.0. I gravel vac'ed a ton of debris, so hopefully the nitrite buildup this time will be slower.I was responding to the stop doing water changes post. Today at work I was scolded by a couple experienced fish folk for doing too many. Let it be, was their point.