Water them every OTHER day, and only if needed. Like posted earlier, make sure the soil is begining to dry up. You should have enough nutes in the soil to last about 3-4 weeks also, so don't add nutes at this point. Basically you want to water every other day and feed nutes every other watering when they eventually need the nutes. When you do begin adding nutes and lets say you start on a Monday it goes a little like this:
Monday- water/nutes
Tuesday- nothing
Wednesday- water only
Thursday- nothing
Friday- wter/nutes
Saturday- nothing
Sunday- water only
Monday- nothing
Tuesday- water/nutes....hope that helps