I've been running a drip system for around 8 months now on a 450 gal with 150 gal sump changing out around 80 gal a day. 2 fluval fx5's and a pump turning over 1200gal/hr going through 2- 7"x32" 50 micron filter socks. Left on holidays for 3 weeks without any tank cleaning during this time and returned to good water parameters.( 0.1 mg/l nitrite , 20 mg/l nitrate , 0 ammonia ) . my fluval fx5's are all bio media. Fish were always fed twice daily during this time. 1x12",3x9",1x7" motoros.
