For my 1/3 hp compressor, I use a commonly available Heavy Duty Mechanical 24 Hour Timer Dual Outlet 125V 15amp 3-Prong Indoor (around $12-$15). Several model brands are available. Mine is an Intermatic brand mechanical style timer not a digital model, however digital is probably okay. Mine has been running okay for 26 years.
There are outdoor models probably water/moisture resistant availalbe if needed. But if moisture concern is a problem then you are better to more worry about the moisture damage to the much more expensive compressor compared to a low cost timer. KEEP compressors cool and DRY.

Question: How many compressors and individual 9" diffuser heads comprise your vertex HF 4 XL2 aeration system? For 6 ac of water is a lot of gallons or acre feet of water and depending on the shape and depth of the basin you might want to run the compressor/s 24/7 at least during Apr-Nov.
How fast will the aeration system turn over the pond?
Do you know if the aeration system is creating least 1 or maybe 2 turnovers per day for 6 acres of water?

If not the system might be vulnerable to some form of a fish kill during special weather periods.

Last edited by Bill Cody; 05/29/25 02:57 PM.
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