I just came up with an idea to replace air stones for seedling development by combining 2 hydro technologies.
My starter tote is partially set up with a drain that is capped off. I will remove the shut off valve to make way for the pvc inflow to create a low pressure aero system that drains back to a rez. I have most of the parts.
Parts needed; pvc tube plus end cap, a couple low pressure mist heads, high volume low pressure pump and a deep cycle timer as they do not need/want more than 30 second wet cycles (10-15 probably better) and ~ 1-3 minute off cycles