Dr. Spa

NO! It needs the neutral to operate. If the wiring is run in conduit, you can pull it out, then re-pull it with a neutral wire.

You do understand how you came to be, don't you?

Until someone steps on it and rolls onto the tub, breaking the cover.

Should be somewhere in Article 680. A spa requires a dedicated circuit. So, no, you can't tap into the circuit and pull a 110v line. However, you could run the 240 circuit to a sub-panel near the spa, then install the 240 GFCI breaker for the spa and a 15a breaker for the 110v lighting circuit...ASSUMING you have the amperage required to run both circuits (which is unlikely).

Sodium bromide is oxidized (typically by chlorine, dichlor, bleach OR MPS) into bromine. The strips test for bromiNe. There is no test for bromiDe. Well of course you can have too much. You can also have too little. Depends on how much you put in ;-)

http://www.poolspaforum.com/forum/index.php?showforum=13 read the top "pinned" topics

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1 cubic foot of 2# foam weighs 2 pounds. 10# would weigh 10 pounds per cubic foot. The higher the weight, the more dense it is and the stronger it is. Unless you know the exact weight of the foam and the thickness of each type, as it was engineered by Hot Spring Spas, I would surmise a high chance of failure and your spa will wind up cracking beyond repair.

There's at least one jet that's malfunctioning. The jets are designed with a built in venture, which will naturally pull air through the pipes you see. Could just be some internal blockage in the jet nozzle or some other debris caught in the jet. No check valves are needed or intended.

Hot Spring Spas isn't lots of spas. Again, I believe the foam is an integral part of the structure and without it the shell WILL crack. Additionally, the foam is layered on in different, specific densities, to give it the overall structural support.

I'm pretty sure you would also have to "properly" refoam it as the foam is an integral part of the structural strength needed to keep the shell from cracking.

Lucky? No. It's 4 months old... There "ain't" nothin to clean out (other than what was contained in the foam). Try again at 4 years.

Do NOT use, or try to use a utility knife. Flex PVC has a spiraling reinforcement piece that would be VERY difficult to cut cleanly through. Use a hack saw. You MUST use PVC primer (then glue) on flex PVC (or sand the pipe to clean off the glaze). Just cut it right in the middle of the hold and glue in the coupling. Easy.

Artesian Spas is one of the better manufacturers out there. They stand very solid behind their product. As for the number of pumps. 1 is fine, if the spa feels good to you. 3 or 4 may feel better, or worse, will definitely cost you more initially to buy, and require 3 to 4 times the maintenance as compared to 1 pump, over the life of the spa..

Concerned about what? FYI, the spa in your link is made by Artesian Spas, not Arctic.

A 3 week old spa? It's NOT biofilm. If you're getting foam, it's due to contaminants YOU'RE introducing into the water. Hair care products, personal hygiene products, sweat, whatever the kids are doing in there, etc. The clairifier coagulated all of this, creating the "greasy gunk"

Unless this is a spa/pool made of plaster/concrete/gunnite or has tile with grout, leave the CH where it is.

" Also, I would think that if one used the sleep mode somewhat often, they would use more energy heating the spa back to the set temperature by 20 degrees, rather than maintaining the set temperature. Am I missing something? " Not at all true. The cooler the water is, the less heat (energy) will be lost to the atmosphere (Newtons Law of Cooling). The amount of energy needed to heat the spa back up will be less than the amount of energy lost.

Really depends on the brand. Some cheaply made spas are pretty much disposable after 5 to 10 years. A name brand quality spa can last 25 years.

Depends on the individual chemical. Generally, any dry granular products should be ok. Any liquid chemicals, probably not.

http://www.rhtubs.com/covers/measure.htm

Correct. If you'd be getting it from a shop, make SURE it comes with at least a 90 day warranty. Also, find out if they just fix them cosmetically and repair what they find is broken, OR if they ALSO do any preventative repairs.

The wall outlet was NOT a GFCI? And the breaker it's now tripping IS a GFCI?

Really? Such as what????? I don't think so. "Has hot tub electrical efficiency improved in recent years?" No. It's ALL about insulation. Heaters can't be made more efficient. Pumps could be slightly more efficient, but not in any noticeable amount. About the only more recent development in efficiency has been thicker, more insulating covers.

Fill it with cats