helloo.....

Hi i'm making my sub and i'm lookig for some advice...

I don't have so many experience with the scrudder system to refrech air so
i'm looking for some one who can help me....

I got my sub already in my mind and i think i can make the sub that is no problem
but the only thing that got my attention now is the air in the sub.

I want to make a scrudder to clean the co2 from the air but i don't know haw...
so if some one kan help me please let me now.

I got the following quistion.

Is it right if i say that i don't have problem to go down and come back to surface
so many time to refresch air becuase the presure in the sub will be 1 bar all the time??

How can i make a scrudder (homemade) simple ........

and if some one can tell me if my sub is DANGERUS becuase of the design....i'm not
gooing deeper than 20 meter (65,62 foot)....

Wath i wont is ,,,to stay adlease 30 min below....... the total air volume in my sub will be around
400 liter (87,99 gallon us)

If some one can help me please....

Please forgive me for my bad english....:-)

Regard
MasterDigi

ps- I have put i pict of my plans for the sub on the internet at http://www.themasterdigi.com/vash.jpg