etss 600 xr

[tony72]

hi guys trying to find out how to run this thing how many bioballs intube it has a ball stopper halfway down, where should the water level be one inch below or above black box i have had it a few month and put new balls in, there are three balls right now, the pump is a blueline 55

 

[dahenley]

in the lighting and filtration section, there is a "etss" skimmer club. they have lots of those answers.
you might want to post there.