$139 for 65% vs $349 for 70% vs $264 for 68%

[Lucky13F]

I obviously want to save some $ -- not sure how much 2-5% difference compares to the massive difference in price
Reviews of all state the obvious "Might need a little extra but for the price? etc"
I need the chemicals but I am on a budget these days [while in between jobs unfortunately] and the kids don't really care - they want a blue pool
I want a lot of chemicals in a larger and longer term purchase than 1 pound bags.
Not sure if I'm allowed to list the names - so [used brackets]

Can you guys please recommend?
Thanks so much in advance.

Option 1:
[Store Name Brand] - Power Powder Granular 70% Calcium Hypochlorite Pool Shock - 50 lbs.
*Ingredients on Package State: "70%"
**Price: $349 for 50 lbs
vs
Option 2:
[3rd Party Brand] - Calcium Hypochlorite Pool Shock, 55 lbs
*Ingredients on Package State: "Min 65%"
**Price: $139 for 55 lbs
vs
Option 3:
[Different 3rd Paryy Brand] Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 50 Pounds
*Ingredients on Package State: "68%"
**Price: $264 for 50 lbs

 

[Bperry]

I obviously want to save some $ -- not sure how much 2-5% difference compares to the massive difference in price
Reviews of all state the obvious "Might need a little extra but for the price? etc"
I need the chemicals but I am on a budget these days [while in between jobs unfortunately] and the kids don't really care - they want a blue pool
I want a lot of chemicals in a larger and longer term purchase than 1 pound bags.
Not sure if I'm allowed to list the names - so [used brackets]

Can you guys please recommend?
Thanks so much in advance.

Option 1:
[Store Name Brand] - Power Powder Granular 70% Calcium Hypochlorite Pool Shock - 50 lbs.
*Ingredients on Package State: "70%"
**Price: $349 for 50 lbs
vs
Option 2:
[3rd Party Brand] - Calcium Hypochlorite Pool Shock, 55 lbs
*Ingredients on Package State: "Min 65%"
**Price: $139 for 55 lbs
vs
Option 3:
[Different 3rd Paryy Brand] Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms - 50 Pounds
*Ingredients on Package State: "68%"
**Price: $264 for 50 lbs

The cheapest one is the better deal as long as your pool can accomodate increasing the CH by ~150ppm. Once the CH builds up it will cause problems like CYA.

55lbs of 65% calhypo adds 212FC ( and 150CH)
50lbs of 70% adds 217FC (and 168ppm CH)

divide the $139 by 212FC and get $0.65/FC
divide the $350 by 217FC and get $1.61/FC

 

[Lucky13F]

The cheapest one is the better deal as long as your pool can accomodate increasing the CH by ~150ppm. Once the CH builds up it will cause problems like CYA.

How do I know the answer to this?

 

[Flying Tivo]

Your last tested CH is 110ppm, Range is 250-650. Since your pool is vinyl you dont have a hard set limit but your CSI will be your guide.

 

[Bperry]

How do I know the answer to this?

Look at the two prices I listed above. One costs you $0.65 and the other is $1.61. Its more than twice as expensive.

 

[mknauss]

Be aware that cal hypo is the most dangerous pool chemical you will handle.

Chemical Storage and Safety - Further Reading

www.troublefreepool.com