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    Are 12v lights safer than 120v?

    Thanks for the responses. I still wonder why the lights come in both 12v and 120v. Why make both? I am assuming code requires 12v on commercial pools because they are safer. Why else would code care? And if they are both equal in safety, are there any other reasons to choose one over the other?
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    Are 12v lights safer than 120v?

    I am trying to decide between a Pentair Intellibrites 12v pool light with transformer vs. the 120v pool light. Code for my area requires 12v only for commercial pools. Are 12v lights safer?
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    New pebble calcium reading 1000

    Pool builder says over the phone it's fine. But he doesn't test the water, add chemicals, or anything. I have just started reading about chemicals, startup, pool school, etc. and now I'm afraid my pebble finish has been ruined from neglect and faulty chemistry! Is this possible? Am I going to...
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    New pebble calcium reading 1000

    My new pool was pebble plastered 4 weeks ago, but not acid washed before filling. The pool builder added some acid after it was filled and told me to brush it. I have had no instruction since then and I'm getting worried that I should be doing something. I bought a test kit and PH is 6.2; TA is...