I have a regular, quite large DAS (downstream AS..) . powered by a huge eheim pump and 8x39w T5HO at 3000K. Its just supergreat.
For my smaler tank I want to try this UAS...
so here it is:
does boble size matter? Cause they turned out quite fine..
This is a picture taken from above. same as the one in this thread, I just have no airstone. Just a newjet 1200 and a small airpump
connected to it.. just started it up, about 2 minutes ago..
It is in a smal 20 liter tank now (about 5 gallons). I use a newjet 600 to pump water in to the tank - and have a
40mm outlet.
video:
http://youtu.be/2AyQPn1dlHw