Is your spa water as sparkly as on "day one"?

irekz

New member
May 12, 2020
2
UK
Hi guys.
I have an inflatable spa and after some intial problems with water quality (CYA getting too high), I found this forum and have been following TFP procedure. I have a decent test-kit (tablet based comparator as Tailor kits don't seem to be available in the UK). I use dichlor-then-bleach approach. Not using anything else than: dichlor, bleach, dry acid, borax. My water:
FC: 5
CYA: 20 (indoor spa)
TA: 110
PH: 7.7
Borates: 50

I never allow FC to drop below 2, shock weekly, we shower before getting in, filters are cleared frequently. bottom vaccumed.
My water (1.5 months now) is clear, does not smell or foam, no visible particles, etc, but just does not have this amazing sparkle and clarity you get on the fresh fill.

Am I asking for too much? Is it even possible to mantain crystal clear water in spa like on the day one?
What is your experience?

Cheers,
Irek

ps. TFP is amazing, now considering a proper hot tub as I feel confident I can make the water safe
 

Oly

Gold Supporter
Jun 28, 2017
1,296
Fresno, CA
Test for and monitor CCs (combined chlorine) levels in your spa.
When CC rises above 1ppm that is a call to action. It appears you are doing the all the right things to keep your water clean and slow CC rise but I would recommend including purging the plumbing with a good surfactant even for new tubs. Do a search for "biofilms" and understand how hot tubs are affected. Many here use https://www.ahhsome.com with excellent results.

Now to your clear water observation, I have a tub with a water volume close to yours and my experience is at some point you will want to drain, purge and refill. Or at minimum partially drain and refill to reduce the CC. Yes you can raise the FC level to shock and sanitize, then open the cover, expose the water to sunlight and lower the CC. Over time I realized replacing some or all of the water is the easiest remedy and how often will depend on your water volume, number on bathers and frequency of use. Happy soaking.
 
  • Like
Reactions: irekz

irekz

New member
May 12, 2020
2
UK
Thanks for your feedback @Oly!
I ordered a tub of "ahhsome" - it's available in UK (expensive though), will use it on the next purge.
I ordered a DPD3 as well to test for CC - will be interesting to see where I am - I usnderstand that lack of UV from sunlight (spa is indoor) might be creating some problems here.

Cheers,
Irek
 
Last edited:
  • Like
Reactions: Oly

Oly

Gold Supporter
Jun 28, 2017
1,296
Fresno, CA
Yes it is not cheap but you will not use much to purge your spa. The visible results of the purge were obvious and the effect on our sanitation efficiency going forward was confirmed.
With an indoor spa you cannot use sunlight to lower your CC but most outdoor stand alone spas utilize covers for insulation so are not exposed much either. My experience with opening to reduce CC did work but with diminished returns over time and replacing the water in our small spa at regular intervals was the answer.
 
  • Like
Reactions: irekz
Thread Status
Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.