" Unattended Puck feeders " & the uninformed

[chem geek]

Yes the tabs are tri-chlor and every now and again I have to adjust the pH a little bit but not much. I do not have any metal in the pool though. I have found that this works very well for me, regardless of others experiences, I feel "if it aint broke don't fix it" LOL...early in the summer I had a serious problem with black algae and had to acid wash my pool b/c of it. As a result, I self educated on pool care and VIOLA, a sparkling clean pool!

Two more questions. Do you happen to have aeration features such as a waterfall, spa spillover, lots of splashing kids, fountain, etc.? Also, what is your typical TA and pH level? I'm thinking that with aeration, high TA (which you would normally have when using Tri-Chlor anyway) and not too high pH, your pool probably outgasses carbon dioxide which would cause the pH to rise thus compensating (mostly) for the pH lowering from the Tri-Chlor (so the net effect is not much of a pH change, which is what you see). Eventually over time, your TA will get lowered, but if you are using Soda Ash (Sodium Carbonate, which is usually in pH Up), then you will both raise the pH and increase TA simultaneously.

In my pool, I didn't have much aeration and I used an electric pool cover that was closed except for our using the pool. So that's why I saw more of a pH drop than you probably see. Just trying to figure these things out...

Richard