I built a 120 gal sump filter, with large foam prefilter, 60 gal bio balls, approx 15 kgs biomax, then more fine foam before the pumps. It runs on 2 magdrive 24's pumps which net about 3400-3600 gal/hr rate this helps carry waste to the filter where it's easier to remove, I also installed a fluval 404 full of biohome that pumps water through a coralife 36 watts 12x UV sterilizer and returns back into the sump. To help with Nitrates I installed a Korallin Sulfur biodenitrator S4002 which works very well, with no side effect so far. I change 30 % of the water weekly at a minimum, rinsing out the foam filters in the water getting pumped out. I add a small amount of doc wellfishes aquarium salt ( 3 tbs / 50 gallon) and black water extract for trace elements and seachem prime for conditioning. The glass needs a scrub every couple weeks and as for everything else inside the plecos look after.
Water quality is as follows:
Amonia = 0
Nitrite = 0
Nitrate = 30 mg/L ( and dropping as denitrator loads )
Ph = 7.1
Temp = 83 F
Wow, this sounds way more difficult when I type it out, but its really not that hard. Total maintaince takes about 1.5 hrs a week, and I use a water pump and hose for draining and refilling from a 50 gal mixing tank that also is under the main tank.
Hope this answers your questions,
I glade you guys enjoy the pics, Thank You.