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If you can not afford the all-flo than call scott at BPH PUMPS and get the poly yamada with viton seals 1/2" it is about 200.00 cheaper than than the all-flo, than after a season by an all-flo. I have 200 feet of 3/4 hose on a titan hose reel and run the yamada poly air pump and it works great. I have had it for a while now, until my ground guy stepped on the air fitting 2 weeks ago. I used a 2 part resin to seal it in the housing with a couple of threads I had left. It has been doing good for a few weeks now, hopefully it holds or I will be buying a new pump.