1/2 in copper pipe with 2 end caps work best and won't contaminate anything.
drill a hole to inject the gas in one and several holes in the other...no screen needed if they're small.
it lasts forever and costs less than a dollar.
Submitted by Anonymous () on Tue, 08/11/2009 - 16:55.
1/2 in copper pipe with 2
1/2 in copper pipe with 2 end caps work best and won't contaminate anything.
drill a hole to inject the gas in one and several holes in the other...no screen needed if they're small.
it lasts forever and costs less than a dollar.