Venturi Swimming Pool Aerators Set, ABS Injection, Fit Most 1-1/2” Return Jets (for Hayward-type returns search for “SpaO2 Connectors”), Raise pH Without Changing Alkalinity, Crystal Clear Water

Easy to install - inground 16 x 35 pool - took a few minutes on standard Hayward return jets - saw immediate aeration that looked great. After few days, pH was actually rising (i’m typically too low) so this was pleasant surprise as well. I lost one of the blue caps, emailed the seller, and they dropped few in the mail immediately. Highly recommend.

Spa02 will not work at slow pump speeds when the pool is not in use with other Spa02's in the outflows. If chock the out flows all back it does, however then the pool is not circulating properly. If product is to work there should be a GPM minimum rating on this device. Aeration is needed to maintain the chemical claim for this product at slow speeds when not in use. When it does work with the pump wide open the chemicals are balanced better however premature wear on pumps will take place. We have a 15,000 gallon pool.Also anytime the pump speed is changed the air intake tubes must be readjusted each time.

The media could not be loaded. They work great! Those who said they didn’t work, you HAVE to have good pressure from your return. Backwash/clean your filter, plug other returns that don’t have an aerator, turn your RPM’s up, etc. I have 3 returns total, put the two aerators in, and left my 3rd return open. I tried plugging the 3rd return to see if it made a difference, but it really didn’t. I do wish they sold them in singles as well. I’d love to have one in my 3rd return, but just can’t justify buying another set of two. I ordered the bundle with the adapters in case I needed them, but I didn’t. Took out the “eyeballs” and these screwed right in. Turn your pump off while installing, it’s much easier. I quite enjoy the noise they make actually. Kind of like a soothing water white noise. If you don’t like the sound, the noise reducer button makes it almost silent. Time will tell how fast it raises my pH, but there are lots of bubbles, and I know with aeration you have to have patience. Great product, and it absolutely works if you have enough force from your returns. Highly recommend!

The SPA O2 aerators are fantastic and work exactly as described. Installation and setup were straightforward, and my pool's pH is rising naturally without any chemicals, just as I hoped. A tip for users: they operate much quieter with the blue caps installed. Highly recommend!

I purchased this as I needed a quicker method of raising the pH level in my pool without raising the total alkalinity. Using default pool jets, aerating was a very slow process. I've been using this product for almost a week now and it works great! On average, I'm able to raise pH from 7.2 to 7.8-8 within a day or two.I gave this product 4 stars as I feel there's a small improvement yet to be made. I currently have a robot skimmer in my pool and these jets do make it difficult for the skimmer to navigate the waters. To resolve this, the jets need to be pointing further down or need to be adjustable. As is, I'll have to remove it when I don't want to aerate.

I've had these installed for a week and they work great. Some reviews mentioned that they their pump did not have enough circulation to make them work. That was not an issue for my system.I was having an issue getting my PH up. I'd spent quite a bit of money on chemicals with no luck. The package came with two and I installed both. Within a week my PH when from 6.8 to 7.4.I'll continue to run them and I'll update this long term if I see any issues. In the short term, it's saved me a lot of aggravation and money on chemicals.

Purchase this item last pool season 2022 and since that time the Amazon product description decided to add a caution that it DID NOT fit a HAYWARD 1.5 inch thread.Tried to install today and they were correct.It would have been nice to know this last year before ordering.Why in the world would you manufacture an item not compatible with perhaps the largest name brand in pools. At least supply an optional Hayward friendly bridge fitting.

I do believe this thing works, but you have to have a lot of patience. I estimate my pool to be somewhere between 11-12K gallons. I installed both of them, and it took 5 days to raise the Ph from 6.8 to 7.2 with the pump running 8 hours a day. Also, it didn't fit my pool fittings, that I thought were 1.5". The connections on this are about 1/8" too small. I had to create adapters (I 3D printed them) which turned out to be somewhat of a hassle and took me several tries to get right. Oh, and it's not silent either - it creates a gurgling noise coming from the tubes that extend above the water line. If you remove the tubes then it is silent, but of course there are no bubbles either.