Is this a non clorine shock

It is said to be, and we've never had an adverse reaction. We use it in our hot tub.

why so long to ship this item?

Not emergency only for the pool

How much would I use for a 310 gallon hot tub?

I can only tell you how are use it In our hot tub. I start off with just a little less than a quarter of a cup and then I’ll check it in about an hour and that’s how I do it just a little bit at a time. Wish I could help you more.

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10-Pounds Premium Alkalinity Up for Pools

Product ID: 41908706

Details

Brand
Robelle
Item Weight
10 Pounds
Item Form
Granular
Product Benefits
Alkalinity
UPC
034261225605

💧Sodium Bicarbonate

📏10 lbs

🔧pH Stability

HK$1014

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
Robelle
Item Weight
10 Pounds
Item Form
Granular

Description

🏊‍♂️ Dive into Perfection with Robelle!

OPTIMAL BALANCE - Maintains alkalinity between 60 to 120 for crystal-clear water.
EASY APPLICATION - Simple to use for a hassle-free pool maintenance experience.
PRECISION CONTROL - 11 oz raises alkalinity by 10 ppm per 5,000 gallons.
CORROSION PREVENTION - Protects your equipment and plaster from damage.
ELEVATE YOUR POOL GAME - Boosts total alkalinity effortlessly!

Robelle 2256B Alkalinity Increaser is a 10-pound sodium bicarbonate solution designed to elevate your swimming pool's total alkalinity, ensuring stable pH levels and preventing equipment corrosion and plaster damage. Perfect for maintaining a pristine pool environment.

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