Pond Boss Forums AERATION Systems questions What if water gets in my airline?

Water will invariably collect in low spots. Even from moisture from the air.

I have not found it to be a problem.

If there is lots for some reason, it will take a while to purge because the water will not flow out the diaphragm holes as fast as air.

That is my experience with 9" round Matala membrane type. No experience with other types.

If you have a pump capable of producing significant pressure and flow, I could see where a line full of water could rupture the membrane on startup because of over pressure. I would regulate the pressure not to exceed the water depth pressure (depth in feet x .5) plus a couple psi so the water has time to flow out the tiny holes slowly without balooning up the membrane and stretching it or bursting it. Might take several minutes before seeing air bubbles, giving time for the water to work its way out. A pressure gauge and valve bleeding off excess air would do the trick. Once you see constant bubbles then give full air flow.