I have the Light object air assist and a "commercial" aquarium pump from amazon and im pretty sure it cost me about $50 usd for the setup

​

https://www.lightobject.com/Mount-Fixtures/20mm-18mm-15mm-Laser-Head-wAir-Assist-Ideal-for-K40-Machine?gclid=Cj0KCQiAq97uBRCwARIsADTziybK36iS7iculLL_pihPHH5bhi2BOo5vS0yV3IeqIB6skLLY5ywqrekaAiqTEALw_wcB

​

https://www.amazon.com/VIVOHOME-Electromagnetic-Commercial-Aquarium-Hydroponic/dp/B078H92695/ref=sr_1_5?crid=267FYIZNR81U0&keywords=commercial+aquarium+air+pump&qid=1574475155&sprefix=comercial+aqu%2Caps%2C423&sr=8-5

​

works great