Will bleach for chlorine harm a fiberglass pool or my pump?

[krdowns]

Thanks for the info!

[PoolDoc]

Just so it will be clear to Google-rs who read this post:

PLAIN laundry bleach = 3%, 5.25% or 6% sodium hypochlorite + water.

Pool store "liquid chlorine" = 10%, 12% or 15% sodium hypochlorite + water.


Two cautions:
+ Clorox bleach probably has the fewest impurities of any bleach BUT they add 'other' stuff to many of their bleach products. PLAIN Clorox Ultra is fine (contains a little PAA, but that's pool compatible) but any of the other Clorox products will MESS YOUR POOL UP! So we recommend private label STORE BRAND (not Nobody-brand!) plain 6% bleach.
+ Commercial bleach doesn't keep -- at summer time temperatures, 15% bleach can turn into 7% bleach in just one week. (I do know what I'm talking about - I used to buy 15% bleach by the tanker load: 4,000+ gallons at a time!) Highly purified bleach, like Clorox, will keep longer. But boxed bleach is often stored ALL summer in hot warehouses. In s. Florida, where many pool stores have their own bleach tank, and refill 2.5 gallon totes with fresh bleach . . . pool store bleach can be a GREAT deal. Elsewhere, it can be very expensive, and no stronger than Walmart bleach!