I've made this contraption as well...What exactly is leaking ?
The only problem I've ever had is with my mag 9.5 sucking in air.

Their is probably a better pump out there to use with a closed loop.
Like the Coralife Mag pumps.

Chris


"Peter Pan" wrote in message
. ..
http://www.melevsreef.com/closedloop.html

I followed the directions to the letter, I purchased a new mag 5 drive, I
cant get it to stop leaking.. does anyone have any types i could try?
thanks