Our pool/spa store is closed for the week due to the holiday and I’m out of calcium hardness increaser. I have some HTH Calcium Up for my pool. Can I use that in my hot tub?
Can I use pool calcium hardness increaser in hot tub?
- Thread starter Srbinette
- Start date
- May 3, 2007
- 17,125
- Pool Size
- 20000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Sure but why do you need to increase CH? What is the current level? Why kind of heater does the hot tub have?
We just refilled our Caldera Vacanza series hot tub. My tap water runs at 20ppm and recommended levels are around 150ppm. I was able to increase CH to 60 with what I had left of my spa calcium hardness increaser that came with the tub.
98Poolmaster
In The Industry
98Poolmaster
In The Industry
Add 6 tbsp total add 3 tbsp then wait 15 minutes and add the other 3 tbsp with jets on )Vanto is 375 gallons)