Lets come up with a DIY for a bubble wall

[flopping flamingos]

nfored
Those bubble rivers are pretty easy to make you just design the way the river looks in the gravel and place a piece of glass on top. just make sure to tilt the glass in up in the direction you wish the flow to go.

 

[rocker85675]

i use 3x 2' blue air wands all connected with plastic t's. works like a charm