Can you shock with 6% bleach/Other suggestions for high CD?

[jshank]

I can't seem to keep FC above 0.5 in my 440 gallon spa and decided try shocking it. Can you shock with 6% bleach? I've had my Divine Sinclair tub since last September and finally did the research to confirm I didn't know what I was doing when it came to water maintenance. Last month, I dumped the water for the first time to get a fresh start. I purchased a Taylor K-2006 test kit and thoroughly read Nitro's How do I use Chlorine in my Spa (or pool)? thread and adjusted my levels to match. My daily CD has been over 5-ppm with no usage and my CC was 1.5 so I decided to try shocking it .The shocking exercise did not go well yesterday. I referenced the Chlorine / CYA Chart for Non-SWCG Pools chart to determine a shock FC of 10-ppm. I then applied Clorox 6% bleach as follows which resulted in lower FC than PoolMath indicates. The Ahh-Some and ProTeam Spa Gentle Spa (need some borates for pH buffer) should arrive tomorrow and I'll begin that treatment. Anything else I should be doing here?

Minutes	0	15	30	45	60	75	90	720
FC	1.2	5.5	5.5	6	9	7	9	0
6% Bleach added (oz)	8	4	4	6	4	4	0	4

Temp: 99
FC: 0 (this morning)
pH: 7.0
TA: 60
CH: 150
CYA: 20-25 (hard to tell below 30)

 

[dunginhawk]

Ive not heard of borates for a hot tub... i have a 55lb tub coming, so perhaps ill give that a go too .
Yes you can shock with 6% bleach... just make sure you add enough according to pool math. For instance, I think for my tub to shock to 16ppm was like 8 oz or something...

 

[splashpad]

I can't seem to keep FC above 0.5 in my 440 gallon spa and decided try shocking it. Can you shock with 6% bleach? I've had my Divine Sinclair tub since last September and finally did the research to confirm I didn't know what I was doing when it came to water maintenance. Last month, I dumped the water for the first time to get a fresh start. I purchased a Taylor K-2006 test kit and thoroughly read Nitro's How do I use Chlorine in my Spa (or pool)? thread and adjusted my levels to match. My daily CD has been over 5-ppm with no usage and my CC was 1.5 so I decided to try shocking it .The shocking exercise did not go well yesterday. I referenced the Chlorine / CYA Chart for Non-SWCG Pools chart to determine a shock FC of 10-ppm. I then applied Clorox 6% bleach as follows which resulted in lower FC than PoolMath indicates. The Ahh-Some and ProTeam Spa Gentle Spa (need some borates for pH buffer) should arrive tomorrow and I'll begin that treatment. Anything else I should be doing here?

Minutes	0	15	30	45	60	75	90	720
FC	1.2	5.5	5.5	6	9	7	9	0
6% Bleach added (oz)	8	4	4	6	4	4	0	4

Temp: 99
FC: 0 (this morning)
pH: 7.0
TA: 60
CH: 150
CYA: 20-25 (hard to tell below 30)

CYA & chlorine are both degraded by heat.
The Chlorox brand of bleach has polymers that are not pool/spa friendly
A SLAM Process is Shock.Level.AND.Maintain

 

[jshank]

SLAM is Shock.Level.AND.Maintain

Ok, so I'm expecting for it to keep dropping. Cool, I'll keep on it until it stays.

 

[ajw22]

Your Clorox bleach likely says on the label it contains Cloromax Technology. That is polymers which cause foaming and is not suitable for use in a pool or spa. You need to find pure liquid chlorine/bleach with no additives or scents.

 

[jshank]

polymers which cause foaming

That's confirmed, it looked like a giant bubble bath. Now I've got to figure out what to do with the rest of it. I picked up 2 gallons of the HDX 10% which seems to be working better. I'm still losing 5 PPM per hour. I need a full day to do the Ahhsome treatment.