Go with an auto top off. I do cover one of my tanks but it because the fish might want to go tile surfing. I have this one on my 55 AutoTopoff.com
(it came used with the used tank setup). I have another from a forum it is a no name brand it doesn't work as good it is reliable just more touchy. I have one in the mail from another forum I hope it works on my JBJ but it it doesn't I know someone that will want it for a tank with a sump. Here is more of a kit version auto top-off components
I was considering one if I didn't find a good buy on a used one. I have a spare maxi jet I was going to use for the pump. The JBJ is suppose to be an excellent buy for the price and I missed getting a used one really cheap from a forum.
I have aqualifters for pumps on both of mine and the one coming has one. I have read mixed reviews on them but so far they have worked fine.