The way everything is under that stand makes it difficult to get any pics that would show much. Half the plumbing is behind the sump tanks. The overflow is sort of a herbie, but really my own invention. No overflow box. I used 90° elbows for the 2 1.5" overflows. 3/4" with a strainer for the full syphon. It's very quiet and moves 2100 gph no problem. I used ball valves on all three overflows to fine tune for quiet operation. The highest 1.5" elbow is wide open and only takes on a small amount of water. All three run into a 65 gallon tank through a 7×16 200 micron filter sock. 65 gallon tank is full of K1. Three bulkheads run off of that into a 45 gallon tank that has more mechanical and bio in one chamber. Pump and heaters in the next chamber plus 1.5" bulkhead plumbed to the house sewer for drip and waterchanges. The other end of the tank has a 3/4" bulkhead at about half way plumbed to drain, hot, and cold water for waterchanges. Has a hose fitting so I can stick a hose on and syphon bottom of tank when needed. Built a 3/4" spay bar at that end of tank pointed straight down to direct flow across bottom of tank. Keeps the tiled bottom spotless.
