HQUA PAS20 Pond & Lake Aeration System for Up to 3 Acre, 3/4 HP Compressor + Two 100' Weighted Tubing + 2 Diffusers

Well built and seems to be working great.

The PAS20 Pond Pump works great and helps keep the fish active and plays an important role helping to control algae. I set up a 90-minute ON/30-minutes OFF automatic cycle on a timer (bought separately).Customer service is Excellent!These are my recommendations (and I will follow-up with my pump rebuild experience):1. If you like the pump performance, I recommend buying a Pump Rebuild kit (for your pump model year) in advance, so you won't forget.2. If you plan to rebuild the pump, I recommend taking several photos of the pump before & during the rebuild process so you remember how to re-assemble the pump.3. If you plan to rebuild the pump (~$50 rebuild vs ~$600 pump), I recommend buying spare screws ($10 for 25 screws M6-1.0x14mm FLAT Head screws).4. I recommend red loctite to imitate the manufacturers decision ensure the piston stays tight when it gets hot.5. Removing the 12 screws is easy, but you may need a socket wrench for leverage instead of a tiny allen wrench.6. The piston screw removal (1 screw per piston) was the most difficult task, and I found a quick solution. The two (2) Flat Head piston screws are installed with permanent red loctite, so I simply used a #2 screw extractor (drilling a hole into the socket, and using an extractor to remove the screw), which is a predictable process for me. (I had unsuccessfully tried a propane torch to soften the red loctite, so I will use to use screw extractors in the future).7. The piston seal installation was tricky. The seal fits between two pieces of the piston head, and fits tightly within the piston ring (the seal tends to twist out of position). I decided to place the piston in the highest position, fit the ring, then rest the seal & piston cap on the top of the piston-ring. Then I used the screw (adding red loctite) to uniformly press the seal into the piston.This is my rebuild story to help you: As advertised, I followed their instructions exactly (including an automatic on-off timer to prevent overheating), and the pump worked maintenance-free for more than 2 years. After about 27 months, the pump became significantly louder but the pump was making bubbles (in hindsight, this louder noise was evidence of the seals degrading, and the pumping power was significantly diminished).I recommend preparing the Pump-Rebuild process quickly after the pump gets louder (AFTER 2 years).I bought the PAS20 rebuild kit in advance (and make sure you get the kit compatible with your pump model year).Eventually, our pump stopped making bubbles, so I successfully rebuilt the pump. After trial & error, I developed the recommendations above (I had to buy screws in the middle of the rebuild process). In the future, I think I could rebuild the pump within about 3 hours (I consider myself to have average DIY skills).

I bought this pump and accessories after researching my best options for the price. I have a small 1/4 acre pond and want some air diffusers for both ends. I purchased this about in February 2020 sometime. I bought a housing to go with it so it was protected from the elements and had electric already out so I was able to plug easily into a timer. Easy to setup, was about 50 yards from the house and never heard it run. Worked great up to a few weeks ago.My house is on the Myakka River in Venice Fl and up to Hurricane Etta (Fall 2020), even though the property flooded it was nothing like the amount of water Etta brought us. To make a long story short, the water ended up being high enough to enter the pump housing ( and the housing was raised, not resting on the ground). I waded thru the water and managed to unplug the pump. Once the water went down, I plugged it in again but found the pump was buzzing and not pushing any air.I contacted the manufacturer in China who responded within 24 hours mostly due to the difference in time. I told them what happened and asked if I could ship it off to have fixed. It wasn't their fault and I was happy to pay for the repair if reasonable. I was informed it could not be repaired but they would be happy to replace it (a new model by the way) at an extremely fair price including shipping from China. I took advantage of the price and their service and within about a week I have my new pump and it is working great. They also sent me 2 new 100 ft airline hoses at no additional cost to me which I did not need and am trying to return.In my opinion, great product and great customer service. The pump is easily well built and I have no doubt will last a long time. The airline hoses are thick rather than flimsy and the diffusers themselves heavy and well built too. It's obvious the company stands behind their product and I would definitely purchase this again if I had too.

Bought for 3/4 acre farm pond we recently stocked with fish. Been running for about a month now with both aerators, works great and pond looks better than ever. Can't wait to see the effects over a longer time span. Added about .60 / day to electrical bill. Pump is very quiet! That's probably been the biggest surprise for me

We have a home in Discovery Bay on the San Joaquin Delta . We are on a fresh water bay and have had an ongoing problem in the summer when the water temperature can reach into the low 80’s. A green water grass grows along the banks where it can become a solid mass.Two years ago my neighbor an either side and my self installed HQUA’s Aerators. The bubbling action brings the colder bottom water to the surface and have eliminated the stagnation and marine growth.I recently had an issue with one of the aerator units. The head brake off from the base. I contacted HQUA and was told that the system has a 5 year warranty. After sending them pictures of the damaged aerator they replaced both aerators at no cost.Good produce! Good support!