Possible Reasons For Ph Shooting Up.

[backtotropical]

Glad everything is back to normal. Its maybe an idea to keep an eye on the parameters of the tap water for a while, just in case.

Good luck!

BTT

 

[Miss Wiggle]

It's really very unlikely that water changes are the problem. Let us know your tap water results tomorrow, and we'll take it from there?

Well, this might be a case of the "water board" choosing that day to have a mains water pipe clean out. By vastly increasing the amount of chemicals they add into the water that day. They do this from time to time because soft water rots the pipework system. You might be unlucky that you did a water change that day they decided to do it.

I once read a story from a guy who breed Discus for years using normal tap water. Then one day he started to lose hundreds of discus. He couldn't understand what was wrong, first he though flukes and realised it was too fast. He phoned the water board and they told him they had increased the chemicals going into the water that day to clean the pipework system and to raise the PH of water still resting in the system that had become acidic. As they do this because like I said above, it rots the pipework system.

He never used water without it going through an RO unit after that.

Yeah i think this may have happened to me a few days ago. did a water change a couple of days ago at the start of the week, found a dead cardinal tetra last night, no warning just out of the blue. found out the pH had spike up from it's usual 7.2 - 7.4 up to around 8. Tap water was still at 7.4 as per usually but I suspect i may have been unlucky with the water companys cleaning routine and when i did the water change a few days ago it was higher.... no way of telling but its the only thing i can think of as there's nothing in the tank which could send the pH up like this.