Pool Shock by Aqua Org Plus - 65% Granular Cal Hypo - Swimming Pool Shock for In-Ground, Above Ground, Spas & Hot Tubs - 12-Pack of 1 Pound Bags

We have a very large swimming pool in our backyard and we take care of cleaning and care. Chlorine is a very important ingredient in that process. We have used many different suppliers but this is best. Value, ease and convenience. Thank you very much and we will order from you again!

This shock dissolves quickly and doesn’t contain stabilizer which can lead to chlorine “lock”. Container can be difficult to open but not as difficult as some other chlorine containers I’ve had in the past. The really cool thing about this chlorine is that the granules are in a plastic bag within the buckets so you have two opportunities to ensure that the product stays dry and airtight. If you’re new to pools and chlorine, this is important! I made the mistake one year of not ensuring that the container (another brand) was not tightly closed (mainly because it was hard for me to open) and left it in my shed over the winter like that. HUGE mistake. When I went into the shed in the spring, the chlorine smell was AWFUL and worse than that, everything in the shed made of metal was totally corroded. Lesson learned $$$Anyhow, to make reopening the bucket easier, I use the flat end of my corkscrew. Works like a charm. You could probably also use a paint can opener.Price was EXCELLENT, delivery quick and the product works. Enjoy your pool!

Amazon should be ashamed of themselves for letting this be sold and not returnable. I have contacted the mfg and will update this accordingly if they help.Sure, great price for so much cal hypo, and if it worked itd be a steal. I didnt have the problem that many talked about with the tub being hard to open, they sent me the square bucket and it was pretty easy to open, the plastic bag inside was still intact so that part is fine too. However, when i dumped it in the pool, i had dissolved it like i had read from a bunch of reviews, put 2lbs of shock in and instantly turned the whole pool cloudy where i couldnt see the bottom, figured, "no problem", i'll give it 24hrs like some had said it takes, its now 72 hours later and pool is still pretty cloudy and murky looking, my pump and filter are all working fine. If it was returnable, i wouldnt care but unless the company does something, Amazon wont so i'm out the $ and stuck with a crap product. Spend the extra $ and buy something reputable.

First of all, you cant beat the price. Works as intended . All the conplainers here dont know what they are doing. Its hard to open lid? transfer it to different container. Hard to disolve? You not just dumping clorine in pool. Disolve it in bucket first and after pour it around edges in pool, especially if you have pool liner. At the same time make sure your pump is running and let pool robot work as well. It will help to distribute the undersolved granules.

I would like to echo the comments from most customers with the hacks to workaround the shortcomings.1. Horrible lid and a badly designed tab that required heavy duty screw driver and piler to remove. It is worse than the driveway sealer bucket. Good hand exercise though!2. The plastic bag inside the bucket to hold the chlorine shock corroded and broke into 2 pieces. There goes the moisture seal!3. The lid is from the 19th century press seal type. It seals tight but very hard to open on a weekly use basis. Have a heavy duty screw driver handy to do some hand and finger exercise. I'm thinking about transferring all the shock powder to an empty bucket with a screw type lock lid for 21th century use.4. There is no scoop inside the bucket. Again, save the old one or use an old measuring cup.5. No mention of available chlorine on the label, the listing said 60%. So, use more since it is cheaper.6. Probably no stabilizer in the shock, need to buy it separately! There goes the saving!7. The sturdy wire handle may not be a bad thing, at least it won't break like the plastic one. Put a slit opened short PVC pipe on it or wear glove.8. The shock dissolved quickly in a 3-gallon bucket of water than other famous brands I used before. It leaves almost no residue which is a good thing and won't hurt the liner as much.Overall not a deal breaker but there are things for improvement going forward. Keep the price low, that's all it counts!

As others have said, the manufacturer is definitely saving on the packaging here. The bucket lid must be cut off in order to be opened. Not hard to do with a box cutter. Thing is, the lid also doesnt seal now so I have to stack something heavy on top to keep the thing sealed.But Id say it’s worth it. This was far and away the cheapest I could get any kind of pool shock on a per ounce basis. And the stuff works just as well as anything else Ive tried. Be careful where you store accelerants/flammables as cal hypo is an oxidizer, meaning it lowers ignition temps of other chemicals, among other things.All told with how crazy chlorine costs have been, Im very happy with the product.

Product is good but the plastic bag that lines the buckets falls apart so you have a bunch of plastic shards mixed in with the product.

Excellent product to get rid of Algae in the pool