The PH drop is co2 gassing off.duanes Agreed that home testing equipment isn't up to the standards of water plants.
I'll add that the high ph isn't stable, it'll drop a full point after a day. So keeping species that don't deal with ph change well is extra difficult. Aging water is an option. I didn't realize this until I lost a group of roselines. I previously had a few groups of pictus catfish die suddenly just after a water change and finally when my roselines died the same way I researched it and found the reason.
Same way those in England deal with it, use what the tap is as a baseline and do the best you can with that. I'm trying to clear some debt and then get a whole house water filter. I know of a guy in town that has kept a black rhom for 20+ years so it's not impossible.I knew the tap water was bad from just how disgusting it tastes but had no clue it was this bad. Should I stick with my original idea of getting piranha again? I know they're pretty tough fish but I don't wanna get one if it's gonna die a few months or years down the road.
How do you guys from Omaha deal with the high nitrates? Just learn to live with it? Like I said before in the past I've always done water changes when my nitrates got that high
The water in the water lines has co2 dissolved in it. The co2 causes the ph to rise. When the water is removed from the enclosed space of the water lines it begins to gas off the co2. Further more, as water is heated, like say from 50-60* out of the tap to 80* for the tank, it can't hold as much co2 and gasses off even more. All this gassing off of co2 causes the ph to lower. If your water has a lot of dissolved co2 this swing can be quite large and cause serious harm or death.Then I tested ph of both tap water and the water in my tank which I filled a few days ago. Tube on the left is from my tank and tube on the right is tap water. How the hell is there such a big difference? Ph just happened to be that low when I filled my tank up?