very nice changing system. i like the bucket fill pipes. thats neat looking. (i like it more than the plastic/vynal ones.
(it looks like the bricks are stained at the bottom and the black hose in the floor has water around it. was there an accident? or is it just an optical illusion)
500G total water volume with heavy fish load... I change 65G every week...because that's what my mixing tank happens to hold...
LL