I don’t really have a lot of room to work with for the solenoid I’m sure you’re familiar with the bio cube the sump is incorporated into the back of the tank and I have about an inch and five eights of wiggle room before I need to add water. I usually have to put water in the tank twice a day (Open top)
and I’d like to go on vacation sometime I think it’s time to get an ATO and 5 gallon homer bucket ( I think).