AquaDoc Non Chlorine Hot Tub Shock - 32oz - Enhanced Spa Shock to Assist Bromine and Chlorine - Spa Oxidizer Made in USA

This product works as advertised and has been EXTREMELY effective in keeping our water clear. Complaints about the lid on the container are real. It is extremely difficult to open and I don't see any reason for such a complex lid design...the company must have gotten sold on this design from a family member or someone they owed a favor because no sane person would think its easy to open or use. But it's worth the headache for how the treatment works!!

Keeps my spa looking sparkly clean.

I had to write an update to this review. After my grandson broke the top open, we were able to add this shock to the spa. I am pleased to say that my spa is sparkling clean! No chlorine! Five stars for the product. One star for packaging! I would love to comment how effective this non-chlorine shock treatment is for my spa, but how the hell do you open the package? I have tried it, my 40-year-old daughter has tried opening it, now my 15-year-old grandson is trying. None of us are having any luck opening this thing. I think it was sealed with glue!

Seller reached out great communication. I appreciate that. Reviews are right very hard open. It took two of us to try and open the dang thing it’s awkward. There’s better ways to do this.

Perfect chemical for the hot tub! Works as described... like the ease of ordering and think this is a good deal/value for the container size. Works great!

Shock is an essential chemical in your spa health. Mine is bromine based so this is an excellent choice. The entire Aquadoc line is awesome.

Not sure why everyone is complaining about the lid. Just follow simple directions? I lifted the red pin and twisted off (counterclockwise) with ease. Closed it and did it again 2nd time for the video demonstration.. if you indeed have trouble, dont use crazy tools, just hole saw a hole on top or use box cutter knife and cut a triangle and dump it into a ziplock bag. What's the deal, I was gonna do that after reading all the reviews but it opened without hassle for me. Purchased in Dec. 2024 Will update in case doesn't keep the water clear, but I already have pretty clean water. Just little bit of chlorine and oxidizer or this stuff before or after each use. I usually add my stuff before going in, turn jets on to high to circulate for 15-20mins (sometimes 30mins) before entering, with lid open. So that After we're done, I don't have to wait with lid open and come out to it again. Just close the lid and go to sleep and till text time - repeat. Had my tub fot 3 months now, use it 3-6 times a week, water is clear and clean. Usually gets a little musty smell (like just a little) if not used for a few days (due to sitting and boiling under cover this whole time, without fresh air), but it gets taken care of before we enter every time. I usually just cover the bottom of the cap and eyeball it. Since I add it so often, I don't use suggested amount but way less... if I had to guess, it would be half-to-one ounce of product. If I do that couple times a week, that is more than suggested per week, but definitely not per each time I enter the hot tub. I have 8 person 550gallon hot tub, for reference. Please thumbs up my review if it helps!

I like this brand of shock for my hot tub because it works quick and it help keeps my water nice and clear. I had an instance where my water was cloudy and after a couple of treatments, it was back to normal. This 5 lb container lasts for quite a while.

Despite using less than recommended, this stuff smells so strong! Wouldn’t buy again. The smell lingers for days. Concerning.