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I had the same problem. Had a cement slab poured for hot tub. Wired up tub with GFCI. Works great. Then I noticed when I was standing next to the tub on the cement and put my hand in the water, I would feel a "tingle". It would be the same kind of feeling you receive when touching a 9 volt...

I thought I read that when you first start up following a fresh refill,you should basically shock it. I guess I'm incorrect there?

I filled my tub and checked the chemistry before heating or adding anything. My pH was 7.2 and TA was 60. After filling and heating, I added 2 cups bleach per pool calculator. I just checked tonight and of course the chlorine is really high but the pH shot through the roof! It's like 8.4 or...

Do you need to even for a covered hot tub? I thought it was just for open air pools.

OK. Following my previous post about getting our Onzen SWG repaired and it worked like a champ for several months, we drained and refilled the tub a week ago and it quit working again. Called service out and all he said was our TDS was too high (~3500 ppm). So he drained half the water and...

OK. Wife got tired of all the problems with the SWG (Arctic Onzen) and called service. Guy came out and replaced the electrode unit. Come to find out, the calcium was building up on them and blocking the flow thru the unit. I told him we quit using calcium after reading this web site. He said...

Thanks! I may give it a try.

Looks like everybody must be on summer vacation since I'm getting no responses.

so it looks to me like 450 is way too high for calcium hardness. the strips i had showed 250, test kit 450. that shows the innaccuracy of test strips. also, how can i raise TA without pH going super high? last time i raised it with baking soda, pH went high so i lowered with acid, then TA...

waterbear, where do you purchase your bromine products? Our spa dealer doesn't carry it (special order only) and it's quite a bit more expensive than sodium chloride salt.

OK, got the new test kit today. Numbers are as follows: FC=4 CC=1 TC=5 TA=30 CA=450 CYA=0 pH=7.5

When we bought the tub, I could've swore they said it was Dead Sea Salt sodium bromide. But, I called a couple of weeks ago and was SHOCKED to find out I was using good ol' sodium chloride. Does the Pool School have BBB startup instructions (Like "first add dichlor, next balance pH, next TA...

The manual says my tub is 497 gallons, so I've been using 500 gallons to do my figures. But, that's ONLY since I found this web site and the Pool Calculator (Thanks Jason Lion!). I put in a recommended amount a time or two and it doesn't change it quick enough, so I throw in too much and go...

Thanks! I will take some readings this weekend and post them. I only used test strips for the first couple of months (one brand showing everything hunky-dory; the other brand showed everything outta-whack). I purchased a liquid test kit from our local spa supplier but it onlt shows FC, TA, pH...

Hello Everyone! I'm new to the TF web site and forum. Last October, my wife and I purchased and Arctic Spa Summit LE with Onzen salt system. We have had one heck of a time trying to learn good hot tub chemistry partially because we thought the salt system took care of itself pretty much. Now we...