General Hydroponics HGC728040 Dual Diaphragm Air Pump 320 GPH 4 Outlet

The media could not be loaded. So what is the benefit of having a dual diaphragm pump you might ask. Well for one they're safer to use for hydropinics then the regular electric/centrifugal force air pumps because there's less mechanical parts in constant motion and less electricity being used to power the motors. If you run an air pump 24/7, you don't want it catching fire or breaking down in the middle of the night. Less parts means less maintenance and less worry. Dual diaphragm pumps run cooler and won't create excess heat in your grow space. I just put mine outside of the cabinet and suggest the same method for anyone else buying this product. Should this pump malfunction for some reason, it can be fixed with relative ease whereas other models will have to be replaced outright at a much higher cost. This pump is also very quiet and I hardly notice it running in the background. It comes with a 4 valve manifold which can be used for one air line or all four. I like being able to finely tune the air valves because it gives me more control over the air stone output and the amount of water coming out of my top feed drip system. This air pump feels well built when you pick it up. It's not all light and plasticy(yes I used that word)like the name brand air pumps feel when you pick hold them in your hand. This is something you'll purchase one time and not have to worry about air pumps until you go beast mode. I strongly recommend this product to anyone in the market for one of these.

I have ever major brand air pump on the market and this is my favorite one. I have 4 of them I've been running 24 hrs a day for 3 years now and only one ripped it's diaphragm and needed replaced. The main reason I love this one so much is how quiet and COOL it runs. My other pump would get so hot you couldn't hold your hand on them for more then 5 seconds without getting burned. These don't ever get warmer then room temp unless something is wrong with them. My other pumps are fire hazards and I was always worried about them catching something on fire. I just wish these were a little cheaper in price but you definitely get what you pay for. I just hope they get the rebuild kits in stock again so I can replace the diaphragms instead of buying a whole new pump. If you see the rebuild kit for sale I recommend buying 3 or 4 and you'll have this pump forever.

((our opinion top pick so far A++++)) bottom line this pump puts out air the most air out of all listed and we found the best two pumps to be the Hydrofarm AAPA25L Air Pump with 8 or 6 Outlets and the winner for us is the General Hydroponics Dual Diaphragm Air Pump.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)

Shipment was very fast. I ordered a few things from amazon including this so came all in one big amazon box. The box for this pump was split wide open, but is in excellent condition though. I have only tested it so far and it DOES pump out the air big time. The valves are a little stiff which is good because this lets me know they wont leak air. It is a little loud but I dont mind at all, plus, Im sure hooking up hoses with valves on will quiet it down some more, but if it doesnt, Im not complaining, because I didnt get it for noise level, I bought this for superior functionality. Which, this really appears to be.Added Update: This pump is amazing. Actually very quiet imo and pumps air out like no ones business. Hard heavy hitting air, but can turn the air down with the adjustment knobs on the manifold... If ever needed Ill buy a second one with out question!