i think this is on the small side when you account for water drain back in to the sump. i like to air on the side of caution and would want at least 10 gallons of room for over flow so that's only 20 gallons. will it work yes but if possible go bigger. you will be adding 15-20-% more water to your system. would it be possible to put 2 29 gallons under there and connect them with a bulk head. i have a 3/4 inch bullhead on my sump as close to the top as i can get it and then i just put a cheap plastic tote with another bulkhead next to it connected with a short run of PVC pipe this way i can run my water level higher and when the power goes out any extra water will just go in to the tote. look at frag tanks i think they make great sumps that is what i got is an 80 gallon frag tank for my sump.
