The base kit includes the 1/2 HP compressor

if you have a building or structure near the pond already you may choose to get the RA2 system without any cabinet and it will work fine as long as you keep the compressor dry and well ventilated for cooling

which is midway though each Biosphere Pro treatment of 30 days each

these rocking piston compressors will deliver the performance you need for all your compressor installations

But there's a price that your pond pays for that

Solar Pond Aerator For Ponds Up To 1 Acre - 2 Panels Pond Aerators The base kit includes theThe AA1. 2 Solar Aerator will efficiently aerate ponds up to 1 acre. Made with high quality, American Made components, the AA1. 2 provides low maintenance, high volume Solar Aeration on any site. No batteries, AC wiring, or electrician are needed, saving you time and money. A brushless compressor offers over 3 times the system life of brushed permanent magnetic motors. A Few AA1. 2 Features: 2. 8 CFM @ 10 PSI Variable Speed Rocking Piston Compressor