AquaDoc Non Chlorine Spa Shock - Chlorine Free Hot Tub Oxidizer, 5 lb

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!!

Yes, the lid is a little tricky. Not as bad as some make it seem, but not something I want to open every time I use it. Here's a tip. Take an empty container, wash and dry it well, and transfer the contents. Here's the real trick. The labels from the original container EASILY transfer to the new one.

Easy to Use. Just a scoop after every dip keeps the spa nice and clean!

A superior product; I have nothing but positive things to say.

Addendum: I wrote a review months after purchasing this product about my frustrations with the inability to open the container. The company reached out to me immediately and issued a refund for my troubles. Excellent customer service! The product worked great, so I’d say it’s worth buying and shooting your shot at getting the lid off. If you struggle with this, reach out to the company and they will make things right. Initial review: I saw the reviews of others saying that the lid does not come off. I figured that had to be a user error and there had to be a way to get it off. Bought the product anyway. Discovered that the reviews are true: there truly is no way to remove the lid. I ended up having to drill a hole in the lid, therefore the next time I went to use it, the product was a solid block that was not usable anymore. The product itself worked well, but terribly designed packaging. Would not recommend it for that reason.

We've been using this for about a year and I like that it isn't chlorine and doesn't feel as harsh on your skin or swimsuits. We use dip strips and the Crystal system that helps you know what to put in your hot tub. AquaDoc is one of the chemical companies that you can use with the Crystal app, which is why a lot of our chemicals are this brand.

This stuff works! I use this in my hot tub and just place enough on the lid and then toss the product out of the lid and into my hot tub. I have clear water and it doesn't foam up. great smell too which isn't overwhelming. Nice quantity with the large container and we have it on auto ship.

No one, but no one, should buy this product in this packaging. In theory, you use some sort of tool to lift the "catch" out of bucket top from the lid and then unscrew the top. In reality, the top is screwed on so tight, there is no way to make this a one-person job. You need one hand to hold the bottom, another to torque the top, and then a third to hold the "catch" up, and that's if you have enough strength to actually loosen the top when the "catch" is in release position. No one I know has three hands, so it turns into a two person job, IF you have a second person. As anyone who has ever tried a two-person job that involves any amount of force/torque, you don't want either person holding a tool like a screwdriver. Just a bad, bad design that just doesn't work and is bound to draw blood, if not poke an eye out. I ended up using a utility knife to cut a big hole in the top close to the edge, then cut the top edge through the lip of the bucket and poured the contents into my old 6 lb container that opens and closes with a simple twist.