That's great to hear watermom! I live in Guaynabo. Thanks for the welcome.

I should receive the TF-100 kit this week.

As for buying Borax online, the shippping basically doubles the price, and the online prices are about twice the Wal-Mart price so I'd end up paying 4 times what people normally do. If I can find an alternative in a pool store it may actually be cheaper.