Best 2020 - General Hydroponics HGC728040 Dual Diaphragm Air Pump 320 GPH 4 Outlet

Best Pneumatics & Plumbing 2020 ✔ General Hydroponics HGC728040 Dual Diaphragm Air Pump 320 GPH 4 Outlet. 

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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

👍In addition, growers who use our Dual Diaphragm air pump can count on it to reliably oxygenate their reservoir with air stones

General Hydroponics Pumps & Accessories 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!

Best General Hydroponics Pumps & Accessories I've tried many brands of Bubblers and this is one of the best for the quantity & force of aeration it gives. It is not the cheapest, or the absolute most powerful, but it can run Four Aeration Stones vigorously for months. Like everything they do wear out eventually though, but you can self-repair them with one of their Dual Diaphram Kits for about $33; and afterward the pump will pretty much be 'Good as New' once again. I have tried much more powerful single outlet pumps that can be used with multiple outlet Manifolds, but they ALL are Very Loud, too loud for in-house use IMO.

General Hydroponics Pumps & Accessories This package is great, great output for 4 stones and extremely quiet.A future minor con may be the rubber feet, extremely small so wear will happen rather quick.My biggest gripe with this product is the cost of the replacement diaphragms. Just one of those products where they try to make a great deal of money from you after you buy the main product. I’d 3 Star it or less if I didn’t find other options but if you search online, you will find these diaphragms for $10 or less. $30 what they want will buy you a brand new air pump, I bought this for design and repair ability but may buy the $30 units in the future if getting a reasonable cost on the repair kits becomes a hassle.