About how many cups are in one bag?

10 cups if you're measuring out 8 oz's - I do know I ordered another larger bag (19 pounds) rather quickly as I do use in my bath regularly ...

What percentage of magnesium sulfate does this product contain? (how pure is it?) I have seen some brands that contain about 20%, is this one of them?

It says on label "Active Ingredient - Magnesium Sulfate USP (Epsom Salt). You may want to contact the "San Francisco SALT Co. @ 800-480-4540 or sfsalt.com. Hope this helps ...

How much should I use in a hot tub holding 1,500 gallons of water?

I used a handful of this for half a gallon water. I would roughly estimate it as 5 lbs per 50 gallons of water.Do the math for 1500 gallons.Ensure it is dissolved well in a small portion of water before you mix it to the larger container.

can you please clarify is this 5 pounds as in heading or 3.7 as listed in product details

Hello Sam Aromasong,The weight of our bag is 5 pounds as listed, the 3.7 lbs in the product details in incorrect. Occasionally Amazon will weigh a product at a fulfillment center and enter an incorrect weight in on accident. Thank you for bringing it to our attention! We will work with Amazon to make that reflect the correct weight. Have a great day!-RebeccaCustomer SupportSan Francisco Salt Company

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Description

🛁 Elevate your self-care game with pure, fast-acting magnesium magic!

GENEROUS 5 LBS SUPPLY - Ample quantity to maintain your self-care ritual without frequent repurchasing.
PURE POTENT FORMULA - USP grade, 100% pure magnesium sulfate ensures maximum therapeutic benefits without additives.
EFFORTLESS DISSOLUTION - Naturally translucent granules dissolve quickly for a hassle-free, relaxing experience every time.
ULTIMATE AT HOME SPA UPGRADE - Transform your bath into a luxurious magnesium-rich soak that melts stress away.
CUSTOMIZABLE AROMATHERAPY BASE - Unscented salt lets you personalize your bath with your favorite essential oils or fragrances.

This 5 lbs pack of Epsoak Epsom Salt features 100% pure, USP grade magnesium sulfate granules that dissolve quickly in warm water. GMO-free and naturally translucent, it serves as a versatile bath additive to enhance relaxation and muscle recovery, perfect for creating a personalized spa experience at home.

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