my question is about electricity usage. as a temp. system to save fish from a harsh winter I bought a 3 ft diffuser hooked to 250 ft of 5/8 garden hose, ran into an 80 gallon 5 hp compressor that also runs the work shop. the compressor is 220. I connected a 2psi valve, and it works great I can blast high pressure through and make the water boil a foot in the air. is it good to bring all that muck up like that? I worry about blowing the diffuser so I keep it at 2psi 24/7 but I can easily bump that up.im looking at the pondmaster 100 the only reason to save electricity. will it save enough to justify the 200.00 and can the pressure be bumped up? my shop compressor runs 2 minutes every 1/2 hour. should the pondmaster run 24/7 or be ran on a timer? should it run all seasons or be turned off at times? thank you