230 G system shutdown for maintenance

[b_james]

Any Idea how long my system will survive with only internal tank circulation and lights? I have to sut eveything down in order to complete the work down in the basement filter room. I have to disconnect all plumbing and equipment to paint the backwalls, pipe supports and the floor. I anticipate a 2 day shutdown. BTW all I have in the tank is 200lbs of LR 3 real small polyp frags and a handfull for macro algae. no fish.