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  1. E

    F.R.O.G. System

    can someone explain this sysyem to me. ekj
  2. E

    buying new pool

    I am in the process of buying a pool. I live in SC the soil is clay. 20x40 vinyl pool,ig 5 & 1/2 foot to 3 foot deep. well water. Filtration -sand? advantages on/or problems sanitation system F.R.O.G advantages on/or problems ekj