Homebrew PCBs

> Adam wrote:
>
> <SNIP>
> 
> I'm thinking the bubbles should distributed
> evenly across the side walls  of the tank
> rather than directly under the PCB. Downward
> fluid flow would occur in the centre where
> the PCB is located.
> 
> 
> |         |
> |~~~~~~~~~|
> |o       o|
> |o   |    |
> |    |   o|
> |o   P   o|
> |    C    |
> |o   B   o|
> |    |    |
> |    |   o|
> |o       o|
> |         |
> |o_     _o|
> |[ ]   [ ]|
> '---------'
> 
> <- 100mm ->
>

How about false walls and have the bubble flow
up the PCB and the fluid flow down the side in
a seperated channel behind the false walls

 |           |
 |~~~~~~~~~~~|
 |  |     |  |
 |  |  |  |  |
 |  | o|o |  |
 |  | o|o |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  | o|o |  |
 |  | o|o |  |
 |  |  |  |  |
 |   _o o_   |
 |  [ ] [ ]  |
 '-----------'