Had to drain fiberglass inground Pool and add water. Previously added granular chlorine by filling proper amount in measuring cup and spreading into pool. Any problem with this or necessary to disolve first?
Adding granular chorline
- Thread starter jwgillis
- Start date
- Jun 24, 2021
- 15,938
- Pool Size
- 29000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
If it is cal-hypo, I'd dissolve first.
www.troublefreepool.com
www.troublefreepool.com
If it is cal-hypo, know that you are raising CH along with raising FC. High CH can become a problem, even in a FG pool.
Calcium Hypochlorite - Further Reading
www.troublefreepool.com
How to Chlorinate Your Pool
Before chlorinating your pool, you should know these simple tips. Learn the best way to add chlorine to your pool.
www.troublefreepool.com
If it is cal-hypo, know that you are raising CH along with raising FC. High CH can become a problem, even in a FG pool.
Ok great. Many by you need to drain for accumulated CH from high CH fill water and tons of evaporation. At least it wasn't that. 
But if your fill water isn't run through a softener, you'll want to avoid cal hypo to push that draining as far down the line as possible.
But if your fill water isn't run through a softener, you'll want to avoid cal hypo to push that draining as far down the line as possible.
- Jun 24, 2021
- 15,938
- Pool Size
- 29000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
For every 10 ppm FC added by Dichlor, it also increases CYA by 9 ppm. Trichlor builds up CYA. The same is true for Dichlor, except it's even worse (i.e. a more rapid increase in CYA for the same FC addition).
You can pre-dissolve the dichlor in a bucket of water from your pool and add it when it is dissolved by slowly pouring it in front of a return, deep end preferred, while the pump is running. Dichlor dissolves really quickly so it shouldn't take you very long.
If you decide to broadcast the dry granules, do it in the deep end and brush until everything is dissolved. Granules can cause surface discoloration from direct contact
Make sure you use a VERY clean bucket with NO residue from other chemicals. Use PPE.
Dichlor is typically considered to be soluble.
Follow the directions on the package.
If you broadcast, brush until all granules are dissolved.
I would avoid allowing granules to get on any pool surface as it can potentially stain or bleach.
You can dissolve in a clean bucket before adding to the pool.
Never mix different types of granular chlorine in the same bucket or it can explode.
Routine Usage Directions for Swimming Pools
Broadcast Chlorine Sodium Dichlor evenly over a wide area in the deepest part of the pool with the circulation pump running.
To prevent bleaching or damage to the pool surface, use a pool brush to disperse any granules that may have settled to the bottom of the pool.
Dichlor is typically applied by broadcasting the product directly into the water.
www.aquamagazine.com
Follow the directions on the package.
If you broadcast, brush until all granules are dissolved.
I would avoid allowing granules to get on any pool surface as it can potentially stain or bleach.
You can dissolve in a clean bucket before adding to the pool.
Never mix different types of granular chlorine in the same bucket or it can explode.
Routine Usage Directions for Swimming Pools
Broadcast Chlorine Sodium Dichlor evenly over a wide area in the deepest part of the pool with the circulation pump running.
To prevent bleaching or damage to the pool surface, use a pool brush to disperse any granules that may have settled to the bottom of the pool.
Dichlor is typically applied by broadcasting the product directly into the water.
Dichlor: The Sanitizing Stalwart
An introduction to one of the most trusted products in the pool industry.
www.aquamagazine.com
^^^^^^ they're both not kidding about mixing various forms of chlorine in a bucket. My buddy blew his up. I forget now if he added shock packets to the old tab bucket, or vice versa, but there must have been a trace of the old stuff that mixed with the new stuff. And boom.
Lucky for him it took 5 mins and he wasn't there to be hit with shrapnel and chemicals
Lucky for him it took 5 mins and he wasn't there to be hit with shrapnel and chemicals
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