Hey.. I'm redoing my tank a bit, and I did finally get rid of my bright, nearly white, substrate and got Tahitian Moon Sand since it was 20% off at my LFS. Normally, even before I had added driftwood in the past, every time I tested the pH of my tanks, it was consistently around 6.6, occasionally it'd even drop to 6.4 (this is with an API liquid test kit). So, yesterday I switched over the sand and I started to refill the tank.. got halfway done and had to leave this was at about 2pm. Now this morning I had just a couple minutes before I had to leave, and so for curiosity's sake I did a pH test and thecolor of the tube was just blue. Can't recall what the specific pH was, but certainly higher than my normal 6.6. The tank was up for like three yearsand always had a constant pH. The only thing in the tank right now is the conditioned tap water, and, and my driftwood.
Now, my tap usually has a pretty high/neutral pH so I know this is where the change is probably originating from, but normally I feel like the pH would've dropped by now. I tested it at about 6:30am. Should I just wait longer to see if it drops?
I know that my tap water's GH is at like 3.. so it's very soft. I'm assuming that's why the pH dropped so easily in the past. I like keeping fish that like soft, acidic water, so I am somewhat upset that the pH is now different. It is a 28gal tank and I've got about 5gallons of old tank water my filter and some amamino shrimp and some snails are hanging out in while I did the change.. I was going to dump that in if the pH was the same this morning (since both the bucket and tank are being heated, I figured there'd be no major shock if the water tested the same...). Not sure if the addition of that water would make a significant change or not.