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    Pool Math app does not recognize my paid subscription

    I have a recently renewed subscription to pool math. However, every time I open the app and request a new log, the app pops up with a "premium subscription required" message. I then press the subscribe button followed by the restore subscription button. The next message says "no subscription...
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    Jandy transformer voltages seem odd

    My Jandy Aqualink RS control board does not power up, i.e. no visible lights and no command functions. I reset the board, tripped the breakers to let the system rest, removed and replaced the lithium coin battery, all to no avail. I checked the secondary on the center-tapped transformer and...
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    Acid drop Test?

    I am new to pools, having just put in a 35,000 gal in-ground pool with Pebble Fina finish. The contract comes with 30 days of free pool service so I am using a "pool guy" for now. They started the pool up with a "hot start", adding acid to the pool to mildly etch the plaster which allows the...
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    Throwing used test chemicals into the pool

    Total newbie question here. Is it safe to throw the chemicals used in the TL-100 test kit into the pool after testing? I can't imagine why it wouldn't be safe considering the dilution rate (35,000 gal pool), but I just wanted to get a warm and fuzzy from one of you "old heads". Thanks much...