Ultimate Spa Filter Cleaner Fast-Acting Spray. Instant clean for Hot Tub & Pool Filters leaving behind no sticky residue. Prolongs filter life and pool equipment. No soaking. (1-Gallon)

Worked really well cleaning out the filters. Easy spray-on application and it helped remove buildup quickly. Definitely makes filter cleaning easier.

Great product and great price. I use this to clean my spa's filter, and it works wonders. Highly recommended.

After some somewhat disappointing results from the rather harsh filter cleaner "soak" we had used for years, I figured there HAD to be a better alternative that did not involve dangerous things like sulfuric acid and what-not. So I started looking around on Amazon and stumbled across Black Diamond Ultimate (very impressive, especially after I read the reviews and watched the videos). Now, when I bought it, I was initially maybe not so impressed... That is, UNTIL I also noted the Aqua Comb pool filter cleaner hose-end tool (ASIN: B00GS580BC Item model number: 80661) which 'focuses' the stream of water when flushing the filter. The 'comb' REALLY 'focuses' the water deep into the filter folds, and after using the Black Diamond Ultimate, THIS is the perfect combination to complete the task. After using this 'combo' just once, as a test I took one of my older filters which was pretty ugly to say the very least, and which I was just about to throw away. BUT - one single treatment virtually "renewed' this very funky old filter (albeit, I waited about 30-45 minutes between treatment with Black Diamond and the 'hose-out' with the Aqua comb). But I gotta say, after using the original spa filter cleaner for ALL THOSE YEARS and arguably probably disposing of many filters that I 'trashed' simply because they looked like dirty garbage. But this is the answer I have been looking for and now I have THREE nice looking and very clean spa filters once again.. Four "thumbs-up" IMHO..😊

I recently tried the Black Diamond Ultimate Spa Cleaner, it’s a total game-changer for spa maintenance. The application couldn’t be easier. What really impressed me were the results. After one use, the amount of buildup and gunk it removed was shocking. My spa looked incredibly clean, smelled fresh, and felt like new again. The water clarity noticeably improved too. If you’re looking for a powerful yet easy-to-use spa cleaner, I highly recommend Black Diamond Ultimate Spa Cleaner. The results are truly spectacular!

This lives up to the description. It cleans better than other cleaners - even ones that soak and it rinses off easily. The best part is that there are zero suds when I run the jets after.

Do it arrived with no damage or leaking BUT either I got a defective bottle or a defective spray cap because as soon as I attached the spray cap it seemed like it was on but detached and half of this went all of my kitchen floor (I cleaned up the other area before thinking to take a picture). Now... This is a $20+ bottle the size of a standard Windex bottle... That's expensive as it is let alone for half of it to be all over my floor. I tried several times and verified that the bottle and the spray cap DO NoT lock in (essentially making the spray bottle useless) Luckily I had a spare glass spray bottle and poured the rest of it in there. I am happy to report that this solution DOES WORK to easily clean grime off of my hot tub very easily/ fast without leaving any unwanted residue (and our hot tub is somewhat porous). I will be reaching out to Amazon to see if they can do anything to help me out with the fact that half of the product went all over my floor because of a defect and/or design flaw with the spray cap. Aside from that, I would have given it 4.5 stars out of 5... 5 out of 5 if the price was more reasonable.

Buy bulk and save money. Works great.

I've used the overnight soak method with my last spa filters. Dragging buckets around, sloshing water, the wait, and the sometime residue that would bubble in the spa. Not with this product! Spray on the dirty filter, do a quick chore for a few minutes, (or sit with a cool one), and then rinse the dirt and debris out with your garden hose. Dirt gone. That fast. No slime, no product residue, no overnight. Quick, easy, and clean. Tip: I've found that if you change your filter, and don't have any time to clean it right then, come back to the dirty filter and give it a quick water spray to wet it first. Then spray with the filter cleaner. Good as new! No residue bubbles in the spa. Fantastic product! Thank you seller!

Works really well and easy to use! Seems to get the filters way more clean than just water spray!

Was recommended to use a product like this one when I got my hot tub and i'm glad that I do. It helps get all the scum off of the filter that gets sucked Into your filter and it smells nice and doesn't leave any type of a residue in the water after from what I can tell. I really like this product

Cleans up filter really quick

Au début , j’étais septique sur se produit mais j’ai décidé de l’acheté car nettoyer mes filtres de spas me prenait un temps fou. Utiliser pour la première fois aujourd’hui et se produit est merveilleux, j’ai vaporisé tout le tour de mon filtre , attendue 3-4 minutes et j’ai rincé avec mon boyau d arrosage et en 2 minutes mon filtre était comme un neuf!!! Je vous le recommande

The chemical seems to work good but the spray bottle has issues and won't tighten so when your trying to spray the filter the bottle wants to come apart. I ended up putting it into a dollar store spray bottle which works better