Recent content by Bperry

Yep, just measure “close enough” and if your measurement is technically .1 over or under the actual pH, itll average out over time. I suspect thats why the top of the scale is 8.2. If its over 8.2, you should do something about it. Less than 8.2 and its ok.

Thats not the kind of math this is. Its an approximation thats impossible to calculate with precision in a pool. See the note:

A positive CSI (LSI is similar but not the same) is what contributes to scale. But if the test results are not accurate you dont know whats going on. Innaccurate results are worse than nothing.

So you dont know (its a guess) right? 😉 The pH estimates are just that- estimates. If you read the notes, it says the max amount of pH prediction change accuracy is about .4 and change beyond that is not predictable. If your pH test is telling you the pH is less than 8.2 it most likely is.

There is a better way. The chlorine side of the block isnt accurate and is why TFP suggests using the FAS-DPD test instead. For pH, how are you confirming the 8.6pH?

Removing the old grout would be the best preparation

If you added floc, you better vaccuum that all to waste before turning the pump back on (or at least not let it get through the filter). The pool store kinda hosed you.

SLAM isnt usually limited to a few days. Like above, be patient.

Ok, Im not sure it works like that but not a big deal. Are you not logging chemical additions? If you’ve been adding acid to keep the pH down, your TA will come down as well and slow the pH rise. Thats a more likely reason for the pH reading lower than expected.

They were connected and working in the past? Stuff may just have shifted over winter.

The filter sand is fine. Are you just doing the SLAM because there was algae or because you just opened the pool? The SLAM is to kill organic matter in the water and not necessarily for cloudy water that hasnt been filtered all winter (unless its cloudy because of algae). If theres no algae...

Ah, I didnt get one in my TF kit so I must have just grabbed the K2006 bottle that has a screw cap a lnd a flip up nozzle.

If you had zero chlorine after adding it may have been low to start. You can swim while doing a SLAM.

Post a picture of what you mean. You should just be unscrewing the cap and not cutting anything. Sounds like a mixup of some kind.