how many tablets in a 50 lb pail?

This product is not a tablet... it is a powder. It is 100% sodium bicarbonate (same thing as baking soda). If you want to raise the alkalinity in your pool you can do it by using baking soda which is much cheaper. A 4 lb. box at Walmart costs about $2.25.

What is the chemical difference between "in the swim" alkalinity up and "in the swim" pH increaser? Big price difference.

alkalinity up is sodium bicarbonate, mainly increases alkalinity and some pH. Important for concrete pools. pH increases is sodium carbonate, a stronger base. Raises pH with little increase in alkalinityy.

How much soda ash should I use

This product is not soda ash. It is sodium bicarbonate, commonly known as baking soda. To increase alkalinity 10 ppm in a 20,000 gallon pool, you would add approximately 3 lbs. of alkalinity increaser or baking soda. (Adjust according to your pool size). Simple baking soda is the same product as alkalinity increaser and can actually be purchased much cheaper (about $2.25 for a 4 lb. box at Walmart). Soda ash will increase both alkalinity and pH.

Can in the pool alkalinity increaser replace spaguard?

Alkalinity increaser is the same product no matter what brand you buy. For an even cheaper solution, just buy regular baking soda (large boxes) at Walmart or Amazon. Compare the labels on alkalinity increaser from the pool store and on regular baking soda..... they are the same..... sodium bicarbonate. I have owned a pool for years and I only use baking soda to increase alkalinity in my pool water when needed.

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In The Swim Alkalinity Increaser for Swimming Pools - Raises Alkalinity and Balances pH Levels in Your Swimming Pool Water - 100% Sodium Bicarbonate - 25 Pounds

Product ID: 3575839

Details

Brand
In The Swim
Item Form
Granular
Item Weight
27 Pounds
Product Benefits
Protects Skin
UPC
803354120857

🔥Prevents pH swings for stable water chemistry

🧪Raises alkalinity by 10 ppm per 1.5 lbs/10,000 gal

⚖️Maintains alkalinity at 90-120 ppm

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Elevate your pool game—because balanced water means endless summer vibes!

EFFORTLESS DOSAGE - Just 1.5 lbs per 10,000 gallons raises alkalinity by 10 ppm—pool care made simple and effective.
TRUSTED BY THOUSANDS - Join over 2,400 happy pool owners who rate this product 4.7 stars for reliable performance.
P H STABILITY CHAMPION - Say goodbye to skin rashes and eye irritation by preventing harsh pH swings all season long.
SUMMER READY REFRESHMENT - Enjoy consistently refreshing, swim-ready water even during the hottest days.
PRECISION ALKALINITY CONTROL - Keep your pool perfectly balanced with 90-120 ppm alkalinity for crystal-clear water.

In The Swim Alkalinity Increaser is a 25-pound granular sodium bicarbonate formula designed to maintain optimal pool alkalinity (90-120 ppm) and stabilize pH levels. By preventing pH swings, it protects swimmers from skin irritation and eye discomfort, ensuring refreshing, balanced water all season. Easy to dose and highly rated by thousands, it’s a must-have for professional-grade pool maintenance.

Specifications

ASIN	B002WKF9CA
Best Sellers Rank	#1,323 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #13 in Swimming Pool Balancers
Brand Name	In The Swim
Customer Reviews	4.7 4.7 out of 5 stars (2,432)
Item Form	Granular
Item Weight	27 Pounds
Manufacturer	In The Swim Discount Pool Supplies
Manufacturer Part Number	Y7320
Model Number	Y7320
Number of Items	1
Package Size Name	25 Pound
Product Benefits	Protects Against Skin Irritation
UPC	803354120857
Unit Count	400 Ounce

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