Quote Originally Posted by basementjungle
Running a really massive pump on a small tube doesn't lift water because too much air will clear the pipe of water, and give the incoming air a straight shot up to the surface. It doesn't want to do any more work than necessary, so it doesn't bother to lift any water..
The GH pumps that come with the system are only 8 Watts. I upgraded to a Pond Master and what a difference. I was constantly disconnecting and trying different setups. That may all be true with a single system but on a larger system a larger pump is a good upgrade as well as adding Air Stones, The development you see out of one plant in a month in the DWC would take 4 months in soil....