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General Hydroponics Dual Diaphragm Air Pump
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- General Hydroponics Dual Diaphragm air pump is the only air pump in the world that is manufactured exclusively for use with hydroponics systems
- This high output pump (320 mph/24,800 cc/minute capacities) has four adjustable 1/4" outputs
- In addition, growers who use our Dual Diaphragm air pump can count on it to reliably oxygenate their reservoir with air stones
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General Hydroponics' Dual Diaphragm Air Pump is the only air pump in the world that is manufactured exclusively for use with hydroponics systems. This high output pump (320 GPH/24,800 cc/min capacities) has four adjustable 1/4" outputs or valves that can be teed off twice to power up to eight WaterFarm units. In addition, growers who use our Dual Diaphragm Air Pump can count on it to reliably oxygenate their reservoir with air stones. • This high output pump (320 mph/24,800 cc/minute capacities) has four adjustable 1/4" outputs
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1. this is the pump put out a lot of air compared to all the pumps tested on this review. Also this pump has 3 PSI The others have less so that's why this pump is more powerful.
2. heavy duty well built also unit is heavy good sign good heavy duty motor.
3. noise close or just a little louder than the Hydrofarm AAPA25L Air Pump with 8 ((* to us it is very quit))
4. we will test the pump and see how long it runs before 1st break down will update later......
tested: we bought (3) different pumps right here off amazon witch was a big help so we could get to the bottom line witch air pump pumps 1...) ((was not good air low )) Supreme (Danner) ASP06408 Danner Aqua Supreme AP-8 Aquarium Air Pump, 7-watt 2)... ((was not good air low )) Tetra 26075 Whisper Aquarium Air Pump AP150, up to 150-Gallonand 3...) ((so far this is the strongest air and quietest ((noise level was low but a little louder than the whisper above for true life nosie)) system tested to date 5/2/2015 this is just these 3 pumps Hydrofarm AAPA15L 6-Watt 15-LPM Active Aqua Air Pump with 4 Outlets. Last pump tested Added after testing the General Hydroponics Dual Diaphragm Air Pump is the strongest and our #1 pick)
I have 2 bigger 8in stones and 4 small ball-shaped stones.
Prior to this I used a 10 gal whisper air pump and a 50 gal aqua clear for my set up with some success. I was always annoyed with the noise (and I still am annoyed with it). That's why it's missing 1 star.
I just set it up and literally have to turn it almost off to keep it from spraying water everywhere lol. It actually worries me to turn it so low because I worry about the added pressure on the pump and ruining the unit because of this. See the picture (if it attaches).
I bought it used from amazon warehouse so the box is beat to death, and I don't have the instructions. The unit works, but clearly was a bit worse for wear.
I noticed that when the hole on the top is covered it is WAY more quiet with no noticeable decrease in air flow. Is it an air intake, and will I fry the unit by putting tape over it? My guess is yes, but we'll see. There doesn't appear to be any cleanable/replaceable air intake filter.
Again I'm in my dining room, so noise is a huge factor on whether I keep it or not. It certainly does its job of pumping air and, compared to ones I've bought (and returned) from local hydro stores, it does a way better job and it much more quiet. It is not as quiet as my old aquarium pumps, but if the plants like it well enough I may keep it and move them to the basement.
Taking a video failed a couple times, but if it worked I meant to show the low setting I set it at, then on full blast, unplugged (to show the noise difference), and then plugged back in. All of this was filmed with that hole covered, which I'm guessing shouldn't be covered...