Great questions. Let me try to answer and I will post a picture of the "bubble" tomorrow.

1. How big is the pond, probably about 1/3 of an acre.
2. Compressor watts? No idea, 3.5 HP. I have it on a cheap, Walmart timer that runs a few hours in the evening and early morning. Runs for ONE MINUTE about every 30 minutes (roughly 2x an hour).
3. The compressor will last for years, and years, and years, and years. The compressor might last longer than me!

As for bubble strength, the compressor standard settings are rated at ~ 6 cfm @ 90 psi. The compressor (as most larger compressors do) has an output meter. I'm probably letting it bleed off at about 3 - 4.5 PSI constant (had cfm before, not correct though). The compressor automatically kicks on once it drops to 80 psi until it hits about 125 psi. That takes LITERALLY 1 minute to come up to full pressure. It takes about 30 minutes to bleed off. Cylinders never get hot.

Last edited by woodb01; 08/13/13 11:26 PM.