Homebrew PCBs

>
>well, mine had no port for a hose, simply a hole in the pump mechanism.
>but nobody can prevent me from simply attaching a hose there with the aid
>of glue.
>In normal (fish) operation the hole in the mechanism sucks the air in form
>the inside of the pump housing.

Ok, in mine, when you open the box, there's exposed copper and steel parts.