ok - now testing with a mag9.5 (thanks jose) that is more than enough pump - i have the output of the pump cut back considerably. it would probably work with a mag7. overall height is now down to about 23".



this is what it has produced in about 2 hours. i have it skimming a little too wet right now. it is running on the 20 gal fuge of my 29 gal classroom setup.