HTH Spa 86121 Clarifier, Concentrated Spa & Hot Tub Chemical for Crystal Clear Water, 16 oz

Finally a product that does what it promises. I drained/refilled spa two weeks ago and it clouded up a few days later. Ph and Chlorine were fine. Tried to shock with Renew to no avail. Put 4oz of this in my 500 gal spa and overnight milky, cloudy water turned clear. Best $10 I ever spent.

I actually messed up when buying this because I didn't realize it was for the spa, but I poured it in my pool skimmer and hopes it would clear up some into my surprise the next day the pool is completely clear again so it turned out be a positive mistake LOL

works well and much more cheaper then the pool supply store for tthe same product

It does the job!

New to hob tub ownership and couldn’t get the water clear. It had a foggy hazy look to it. All levels were correct and it’s sanitized but just didn’t look great. Did some research and saw this product being recommended so thought I’d give it a try, especially for the price. Put 2 tablespoons in my 400 gallon spa and ran the jets on the cleaning cycle. Went to the gym and came back to a crystal clear spa. I was in shock at how quickly it worked. Presents the spa so much better. Highly recommend!

Works great for our hot tub! I keep re-buying it. You won’t be disappointed!

Works amazing, I would highly recommend it. It cleared my water within 30 minutes.

Best brand out there, this is the only brand we use at our office