I have a G3 on a 12 gal. tank and a G6 on a 60 gal. tank, both planted tanks. I've had the G6 running for going on 2 years now and the G3 for a year. No problems with either one. I have to change the mechanical filter every week or two but it's so easy with these it's not a problem. In fact, easiest filter I've ever had. I change the chemical every 2 months and rinse the biological every 6 months. I've had several Eheims and these Fluvals are much easier to maintian in my opinion.
Agreed on the easy maint.
Do you *replace* or just *clean* the mechanical filter every week?