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Customer reviews for Member's Mark 3" Chlorinating Tablets, 40 lbs. for
Member's Mark 3" Chlorinating Tablets, 40 lbs.
4.6 out of 5 stars
stars
560 ratings275 reviews
  1. 5 stars80% (447)
  2. 4 stars9% (53)
  3. 3 stars4% (21)
  4. 2 stars3% (17)
  5. 1 star4% (22)

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Showing 21-30 of 275 reviews
Jun 17, 2026
Reviewer name: Jan
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Love these tablets and a great price

Chlorine tabs

Helpful?6RV9RIFQCOD015430857894
Sep 14, 2026
Reviewer name: ray
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

seem to last longer than others

great for when i lock up the house and leave. clean the filter, empty the skimmer, Fill the floaters and go. pool stays clear

Helpful?6RV9RIFQCOD015430857894
Jul 24, 2026
Reviewer name: Almo
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Chlorine tablets

Great product. Individually wrapped. Works well. Competitive pricing

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May 15, 2026
Reviewer name: Danielle
2 out of 5 stars
2 out of 5 stars review

Releases TOO MUCH CYA

These tablets release way too much Cyanuric Acid (CYA). We just opened our new pool and added stabilizer that would have contributed about 10 ppm. We added two tablets to the dispenser that haven't fully dissolved yet. These tablets should release about 2.5 ppm for a 10,000 gallon pool. Our pool is about 14,500 gallons. I took my first water test into Leslie's and my CYA was already at 31 ppm. It should only be half that. Leslie's said it was happening to other customers who bought their tabs from Sam's. Too much CYA will make your other pool chemicals have to work harder costing you more money. I don't like my CYA to get over 70, otherwise it causes issues. I will have to reduce tablets to 1 tab and probably drain partially before end of season. So while these tabs seem like a bargain, they're really not because it will cost more money to manage the CYA now. So if you use these, monitor your CYA levels and maybe use half the tabs you normally do.

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Jul 21, 2026
Reviewer name: StanH1000
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Chlorine Tablets

Individually Wrapped is the best! None broken!

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Jun 6, 2026
Reviewer name: Susu
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Quality & Value

Good Value and I like that the tablets are individually wrapped,,,less breakage and waste

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May 24, 2026
Reviewer name: J M
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great quality chlorine

I’ve used this every year for 5 years and I enjoy that each tablet is individually wrapped

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Jul 16, 2026
Reviewer name: Karlene
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Excellent chlorine tablets

These are great!! They are solid tightly packed individually.. they are all broken like when you have tablets shipped.. they last a good long time and keep your water clean and clear. They are highly recommended

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Jul 30, 2026
Reviewer name: np
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

pool chemicals

good deal

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Jul 16, 2026
Reviewer name: Vicki
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Good price

Good price

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