I realized that I'm going to be away from my girl for 3 days at the 7 week mark. She will probably be about 1-3 weeks from maturity at that point. I'm not concerned about swings in the ph or PPM at that point but don't know what I can do about topping off with water over those 3 days. There is no one that can do this task for me. Does anyone have any ideas? I am in a single 5 gallon bucket that holds 3.5 gallons.