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DO NOT USE rope lights on a spa. I believe they run off of 120 Volts, especially if their not on a GFCI. I have heard that even if it's on a different GFCI, there could be a problem. Water and electricity don't mix. Most electrical inspectors require anything that's electrical or metal to be further than 5 feet or else bonded to the tub.Anne is using low voltage lights which run off of 12 Volts. It may not be 100% legal but some low voltage transformers can be used for underwater use (ponds) not a pools (big warning).They do have a lot of low voltage lights these days ... if you need internet info, PM me and I'll send you what I have. One thing to consider is soaking in the dark is pretty awesome IMO. I now have deck lights that ruin it. They are only 18W each bulb (x4) but it sure is bright now!