I'm going on vacation for a week to Siesta key FL. I don't have a babysitter for my tank. We have someone who is going to check on our cat and feed the fish but not even gonna try to explain anything about the tank. I just have to have faith that when we get back, the tank will be ok. My auto top off is broken so my plan for that is to fill the sump as full as it will go. Lower the salinity so that as the water evaporates it won't climb too high. I figured to lower the salinity to around 30 ppt so that the salinity will be around 40 ppt when I get home. I lose about 1/2 a gallon per day so I should lose around 4 gallons to evaporation. My salinity has been going up by about 1 ppt between top offs so I hope it'll be good.