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Add an Accessory:
Robelle 1405M Chlorine Tabs Pool Sanitizer, 5-Pounds
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Robelle 2205B pH Up for Pools, 5-Pounds

4.6 4.6 out of 5 stars 284 ratings
$16.14 $0.20 per Ounce
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5-Pounds
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Purchase options and add-ons

Brand Robelle
Item Weight 5 Pounds
Item Form Granular
Product Benefits Ph Increaser

About this item

  • Sodium carbonate for pools
  • Raises pH rapidly
  • Prevents erosion or etching of pool surfaces
  • Adjust and maintain pH at 7.2-7.6

Customer ratings by feature

Easy to use
4.6 4.6
Value for money
4.6 4.6
See all reviews
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Frequently bought together

Robelle 2205B pH Up for Pools, 5-Pounds
$16.14 ($0.20/Ounce)
Get it as soon as Monday, May 13
In Stock
Ships from and sold by Amazon.com.
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Pool Mate 1-2255B Alkalinity Increaser for Swimming Pools, 5-Pounds
$15.37 ($0.19/Ounce)
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From the brand

Previous page
  2. Balanced Pool Water Ensures Sanitizer Efficiency, Swimmer Comfort and clear and helthy pool water
  3. Robelle 2607B Stabilizer for Swimming Pools, 7 lb
    Robelle 2256B Total Alkalinity Increaser for Swimming Pools, 10 lb
    Robelle 2205B pH Increaser for Swimming Pools, 5 lb
    Robelle 2825 25 Pounds Pool Calcium Increaser, 25-Pounds (Bucket)

    Step 1: Balance

    Visit the Store

  4. Sanitize with Robelle Chlorine: Kills Bacteria, Inhibits algae growth, Purifies and Disinfects
  5. Robelle 1405M Chlorine Tabs Pool Sanitizer, 5-Pounds
    Robelle 1410M Chlorine Tabs Pool Sanitizer, 10-Pounds
    Robelle 1420M Chlorine Tabs Pool Sanitizer, 20-Pounds
    Robelle 1440M-K 5-in-1 3-Inch Multi-Purpose Swimming Pool Chlorine Tabs, 35-Pounds

    Step 2: Sanitize

    Visit the Store

  6. Rejuvenate your pool water once a week with Robelle Shock
  7. Robelle 1701-12 Oxidizing Shock and Swim Monopersulfate Non-Chlorine Pool Shock, 1-Pound, 12-Pack
    Robelle 1701-24 Non-Chlorine Swimming Pool Shock, 24-Pack
    Dry Tec 1-1901-12 Treatment Pool Shock, 12-Pack
    DryTec 1-1901-24 Calcium Hypochlorite Chlorine Shock Treatment for Swimming Pools, 1-Pound, 24-Pack

    Step 3: Shock

    Visit the Store

  8. Prevent growth and treat existing algae with Robelle Algaecide.
  9. Pool Mate 1-2150-02 50 Pool Algaecide, 2-Pack
    Pool Mate 1-2150-04 50 Pool Algaecide, 4-Pack
    Pool Mate 1-2190-02BX Black Pool Algaecide, 2-Pack
    Pool Mate 1-2190-04 Black Pool Algaecide, 4-Pack

    Step 4: Algae Control

    Visit the Store

  10. Further Maintenance: Clarifiers and Stain Removers
  11. Robelle 2420-02 Water Brightener and Clarifier for Swimming Pools, 1-Quart, 2-Pack
    Robelle 2420-04 Water Brightener and Clarifier for Swimming Pools, 1-Quart, 4-Pack
    Robelle 2550-02 Mineral Out Stain Remover for Swimming Pools, 1-Quart, 2-Pack
    Robelle 2550-04 Mineral Out Stain Remover for Swimming Pools, 1-Quart, 4-Pack

    Further Maintenance

    Visit the Store

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Product information

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Robelle 2205B pH Up for Pools, 5-Pounds

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Product guides and documents

User Guide (PDF)

Product Description

Test for pH with a reliable test kit. If the pH is low (7.2 or below) add this product according to the included chart. Pre-dissolve this product in a plastic pail and slowly pour around the perimeter of the swimming pool while the circulation system is operating. Allow system to operate for 1 hour after application. Retest the pH. If pH is still low, repeat this process until the pH reaches 7.4 to 7.6.

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Robelle 2205B pH Up for Pools, 5-Pounds
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Price$16.14$31.42-15% $11.07
List: $13.00		$21.99$15.24$35.61
Delivery
Get it as soon as Monday, May 13
Get it as soon as Tuesday, May 14
Get it as soon as Monday, May 13
Get it as soon as Monday, May 13
Get it as soon as Monday, May 13
Get it as soon as Monday, May 13
Customer Ratings
4.64.6 out of 5 stars284
4.74.7 out of 5 stars9
4.74.7 out of 5 stars124
4.74.7 out of 5 stars40
4.44.4 out of 5 stars249
4.64.6 out of 5 stars284
Easy to use
4.6
—
4.4
—
3.7
4.6
Value for money
4.6
—
4.3
—
3.2
4.6
Sold By
Amazon.com
Amazon.com
Amazon.com
Pool Day
Amazon.com
Amazon.com
form
Granular
Granular
Granular
—
Granular
Granular
weight
5 pounds
12 pounds
4 pounds
10 pounds
—
20 pounds

Customer reviews

4.6 out of 5 stars
4.6 out of 5
284 global ratings

Customers say

Customers like the ph of the pool spa water treatment. They say it works well to raise the PH of the water, and it works great for tie dye. Customers also appreciate the great value of the product, saying it's much cheaper without the soda ash name.

AI-generated from the text of customer reviews

7 customers mention7 positive0 negative

Customers are satisfied with the performance of the pool spa water treatment. They mention that it works well in their pool and spa, and is great for tie-dye.

"I use this for tie dye, it works great (same ingredient) and is so much cheaper without the soda ash name!" Read more

"Works in pool well. Easy to pour." Read more

"Used this to raise PH level. It worked well. Not much more to say." Read more

"Works fine and mixes well in water." Read more

4 customers mention4 positive0 negative

Customers appreciate the value of the pool spa water treatment. They say it's cheaper without the soda ash name.

"...for tie dye, it works great (same ingredient) and is so much cheaper without the soda ash name!" Read more

"Great value" Read more

"Good value" Read more

"Very good price..." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the ph of the pool spa water treatment. They mention that it's an excellent product to raise the PH in pool.

"Awesome product to raise the ph in pool. Will continue to buy" Read more

"Excellent pH increaser..." Read more

"Effective in raising pH..." Read more

Chemical with no labels
1 Star
Chemical with no labels
This produce arrived in a box which was fine. When I opened the box I found a plastic bag with no markings to indicate what it was. Also included was a piece of what must have been the original box with “directions”. No where on anything was what the chemical was. Gave it one star but 0 would have been more appropriate. Obviously returning the unmarked bag of white powder.
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Top reviews from the United States

Sheila
5.0 out of 5 stars works great for tie dye!
Reviewed in the United States on August 19, 2022
Size: 5-PoundsVerified Purchase
I use this for tie dye, it works great (same ingredient) and is so much cheaper without the soda ash name!
2 people found this helpful
Helpful
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Larry whitsel
5.0 out of 5 stars Nice package
Reviewed in the United States on November 7, 2022
Size: 10-Pounds (Bucket)Verified Purchase
Works in pool well. Easy to pour.
Helpful
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Tcubed
4.0 out of 5 stars Works great
Reviewed in the United States on July 25, 2023
Size: 20-PoundsVerified Purchase
Keeps ph in order, wish larger box shipped with multiple bags, would hate to let water in and ruin this much at a time.
Helpful
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James Williams
5.0 out of 5 stars Work as it should.
Reviewed in the United States on October 2, 2023
Size: 5-PoundsVerified Purchase
Awesome product to raise the ph in pool. Will continue to buy
Helpful
 Report
Spice up your life
5.0 out of 5 stars Excellent pH increaser
Reviewed in the United States on September 23, 2021
Size: 5-PoundsVerified Purchase
The pH of our po dropped considerably and the normal product I use, Spa Up, isn't well suited for large gains. I thought I would try this product and could not be happier. Followed the directions on the bag and increased pH from around 6.5 to 7.5 in about 8 hours. Be sure to read the directions as it states to mix in a bucket first. I highly recommend this because it does clump. I used a spray nozzle and 5 gallon bucket. At about 4 gallons, 12 ounces of product was fully diluted. Will continue to use when large adjustments are needed.
2 people found this helpful
Helpful
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Jen
5.0 out of 5 stars Exactly as advertised
Reviewed in the United States on September 20, 2021
Size: 5-PoundsVerified Purchase
Great value
Helpful
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Edward D. Findysz
5.0 out of 5 stars Worked Well
Reviewed in the United States on September 29, 2021
Size: 5-PoundsVerified Purchase
Used this to raise PH level. It worked well. Not much more to say.
Helpful
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Edward J. Baxter
5.0 out of 5 stars Easy Packaging
Reviewed in the United States on October 5, 2021
Size: 20-PoundsVerified Purchase
Nice convenient size. Did what it was supposed to do. I'll buy again because of the handy size: not too big, not too small.
One person found this helpful
Helpful
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