nigeldcat
Member
Not sure this will help, but I had an EV-120 on a mag 5 for years and it never worked but never well. I shifted several years ago to a EV-180 when
I changed tanks and put on a Mag 7, but never liked the performance of that either. I shifted to a Sicce Syncra 3.5 and have been very happy with this combo. I have to dump cup daily and it is dark nasty stuff. The 3.5 had lower flow but higher head pressure capability than the Sicce 3, and appears to have better flow with higher head pressure than Mag 7. If I were to reboot the EV-120 I would seriously look at the Sicce 3.5 so if the ehieim does not work, look at the Sicce 3.5 as better with pressure which happens with these skimmers.
I changed tanks and put on a Mag 7, but never liked the performance of that either. I shifted to a Sicce Syncra 3.5 and have been very happy with this combo. I have to dump cup daily and it is dark nasty stuff. The 3.5 had lower flow but higher head pressure capability than the Sicce 3, and appears to have better flow with higher head pressure than Mag 7. If I were to reboot the EV-120 I would seriously look at the Sicce 3.5 so if the ehieim does not work, look at the Sicce 3.5 as better with pressure which happens with these skimmers.