Timer is for a couple things - lights, and the water pump. As stated by others the air pump should run 24/7. Figure out the flood/drain schedule for your setup (I find that for most typical tray setups 15 minute flood works well every 4 hours with a hyper-oxygenated nutrient solution.)
khyberkitsune Reviewed by khyberkitsune on . New to Hydro growing ... Quick question... Anyone help please? Well , im new to hydro growing ... but going to give it a try. What is the timer for ?? Does the air pump stay on 24/7 or what ?? I see they come with timers , but dont know what they are timing ?? Anyone able to help ?? Rating: 5