Plain old well water

I am stuck 300 miles from my tank. It was supposed to be 2 days, now it is indefinate. Before I left RODI was running slow, and I have a complicated system with a CO2 offgassing stage before the DI. Took it apart before I left. Sump needs to be topped off tommorow before return pump is exposed. Already had neighbor break a window to feed the fish. Tommorow the tank will recieve about 5 gallons of straight well water. looks like this is the last straw.