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Hi Guys, When ALK is to low ... I know we aim for 50, but even at 50 my pH goes up over 8 after one use. Is 40 safe for Acrylic spa. Thank you

Hi Guys, I have 2 sets of filters for my spa I rotate them. I had a set cleaned sitting in basement drying ... For a while Today I noticed on edges black mold mildew ? Filters are about month old... Should I scrap them ? I threw them in to bucket with liquid chlorine water but not sure if...

Friends... Question on TSP I purchased Recochem T.S.P MSDS says: Phosphoric acid, trisodium salt, dodecahydrate 10101-89-0 100

Hi Guys, I have about 20 LBS of top quality Citric Acid.... Can I use it instead of Dry Acid to adjust ALK/PH ? Seems like a safer alternative, wonder why its not used ? Thank you

Thank you again. Used Ahh Some 3 times in a month of owning tub :) great product

Hi Guys, What do you recommend for filter cleaning... I read on forum that TSP soak is the way to go for pools ? How about hot tubs ? How much TSP in bucket and how long to soak. Thank you

Thank you !

Hello, I read here somewhere that using MPS shock will screw up readings with TF-100 is there a work around ? Are readings affected temporarily or it will be persistent issue. Thank you

Thank you, are rest of the numbers okay. Thank you Kris

Hi, Is CSI/LSI applicable to acrylic spas. My numbers: Ph 7.6-7.9 CH150 ALK 50 CYA 18 now aiming for 25 Borates at 0 ( I have boric acid, but that messes my LSI/CSI even more ) Should I raise calcium to further improve my CSI/LSI score. Thank you

Hey How much time should I wait after adding dichlor to add dry acid ? Mixing is no no ? When can I use hot tub after adding acid ? Can I add some calcium on the same day ? Thanks

Hi Guys, Free Chlorine 3.79 ppm Total Chlorine 4.1 ppm Combined Chlorine 0.31 ppm pH 7.7 Hardness 116 Alkalinity 83 ( With colorQ my Alk was 70 ) Cyanuric Acid 49 Should I lower pH or is this decent results ? Acrylic Hot Tub with Ozone This was tested with SpinDisk .... my TF100 Kit is en...

So it clears up... But as soon as I run jets its back up... Circle Agreed strips cant be compared, but colorq colorimeter and electronic ph stick cant be both wrong 7.1 vs 7.9

Hi Guys, I shocked my hot tub yesterday. With chlorine granules. And i got this "film" on water, water was clear before shock and it was clear this morning until I run jets. ( I just cleaned filters ) Chlorine levels are ok. I just tested pH according to colorq its 7.9 Alkalinity 77 But...

Is Calcium carbonate the right product ? I already added dazzle th+ the dose was supposed to raise is significantly but no dice, unless something is interfering with test ?

Thank you again, I guess I should add more calcium to make it the minium 150 And add acid to reduce pH / Alkalinity at this time :)

Hello, Yes sir, purged with Ahhsome! I just added 36 grams of dichlor granules, 1.27 oz that should bring me to 12 pp. Thank you, Im so confused... Hot Tub Manual says: pH 7.8 with Ozone or 7.2-7.6 with out ozone? Not sure what ozone changes. Hardness 150 to 280 ppm - should I add more...

Hi Guy's Hot Tub 450 Gallons Fresh fill week ago, haven't used it yet... UV and Ozone ColorQ 2X Results: FCL 0.09 TCL 0.035 pH 7.6 ALK 98 CA 146 CYA24 Hot Tub store Results ( SpinDisk ) Total 0.1 Free 0.1 pH 7.8 TA 84 CA 106 They suggest I add some TA+ and then PH- I know I'm low on...