Black Diamond Stoneworks Ultimate Spa & Pool Filter Cleaner Spray - 1 Quart

No soak needed — way easier than the usual filter cleaning routine I’ve used other spa filter cleaners before, and most of them require a long soak (which I never have the patience for). This one was a lot more convenient. I sprayed it directly on the filter, let it sit briefly, and rinsed — and it actually worked. It pulled out visible buildup and even removed staining that had been there for a while. The filter looked noticeably cleaner compared to just rinsing alone. What stood out: • No soaking required (huge time saver) • Broke down buildup quickly • Helped remove stains, not just surface debris • Smells surprisingly good compared to most cleaners After cleaning, water flow improved and the filter just looked fresher overall. It made regular maintenance feel a lot less like a chore. If you want something quick and effective without the whole soak process, this is definitely worth it.

Wry easy to use.

I finally used this product today and it seems to work as well as another filter cleaner that I had before that I got from my hot tub dealer, but I will say as someone else mentioned the spray bottle container that it comes in is defective. It’s like trying to screw it on and the threads are already stripped because no matter how many times I tried to secure it, it wouldn’t stay on and before I knew how bad it was it ended up falling to the ground and splashing up all over me. Luckily, I was outside but it got all over my skin so I had to go inside and quickly wash it off. So again good product, but it needs to be in a better spray container. I’m going to be switching this over to an empty spray bottle that I know works.

I was a little skeptic because the videos showed amazing results. Purchased the product followed the directions five minutes on amazing the dirt just poured off the filter 10 minutes later. The filter was crystal. Clear look like I was just brand new. Highly recommend this product.

Ok, I really put this stuff to the test. I didn’t clean my filters the whole winter and they got pretty gross. I put this on and followed the directions. I sprayed a lot of it on the filter, let it sit for 5 minutes then hosed it off. It worked amazingly! I highly recommend. You can see in my pictures the difference.

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.

This is excellent for cleaning spa filters. Spray it on and let it soak in a little while and spray it off well. Good as new!

Easy to clean filters . Spray it on wait a short time then take a water hose until you no longer see dirt etc. Then return the filter to your machine!

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

A little expensive but does what it's supposed to do.

Normally don't write reviews however I am very impressed with this product you just spray it on wait the minutes and rince off clean and the filter looks new. I recommend it 👍

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

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