BioGuard Smart Shock 1 lb, Pack of 12, Algae Preventative, Swimming Pool Clarifier, Pool Shock Treatment, Multi-Purpose Shock for Pool Maintenance

Used to have all kinds of algae problems in my in ground pool. Pool guy suggested bio shock and I have never had a algae problem since. Great for algae removal and prevention and overall keeps my pool looking crisp and clean. Expensive but worth it. Great quality and easily to use. Dissolves quickly with nothing left on the bottom. The best option that I have used.

This stuff is terrific. Keeps the water sparkling clean.

I’m really impressed with the BioGuard Smart Shock! I had some algae starting to take over my pool, and after just one treatment, the water started clearing up within a few hours. By the next day, it looked crystal clear again. It’s super easy to use, and I love that it’s a multi-purpose shock—it not only tackled the algae, but also acted as a clarifier and left the water looking clean and sparkling. Having the 6-pack is also really convenient for regular maintenance.Highly recommend if you need something that works fast and keeps your pool in top shape!

I had what was finally identified as white algae sudden show up in my pool. I was not familiar with this infestation and had to do some research to figure out what to do about it. The local big chain pool company was not that helpful and was recommended 4-5 things to add all at once....seemed there had to be a better way, so, as I said, I did some research.I have a salt water pool so, I took that into consideration when deciding upon a treatment method. I also have grandchildren who live in the pool during the summer so, that, too, was a primary consideration. This product seems the best base on the eco-friendly biochemical formulation they use. It is a weekly to bi-weekly treatment for my pool, takes about 3-minutes, and is safe to swim in 15 minutes!Best of all, IT WORKS!!! After the first treatment I say immediate results. I did double the dosage the first treatment, but afterwards just have been following the recommended weekly treatment program. NO MORE WHITE GUNK showing up in the pool and the filters are cleaner, lasting longer as well.I do think the product is expensive but, based on the results, I will continue to use until I can no longer afford it. I have been disappointed to not be able to buy the single use containers, having now to buy the large bucket (always a pain to store these bucket bulk items due to floorspace consumption). However, I kept one of the single use containers and just fill it up prior to use and store the bucket remotely...works for me.I highly recommend this product for control of pesty algae and other bio related issues that show up in pools...great product!

Works great. I used it for 8 years.

This is only pill shock I use. Works great

This WORKS...it is a great, premium product. I find it worth the price.

Just so very hard to open, no directions