my lfs large show tank sprung a leak, im not sure about gallons, its 8' long, 30'wide and 30" deep, anyway they are selling for 500, need to be resealed which im pretty good at. is it worth it, comes with lids
That tank is 374 gallons and is worth the $500. If it's acrylic, you'll need one of the Weld-on acrylic bonding agents (rplastics.com) since silicone doesn't bond well to acrylic. If it's glass, aquarium silicone sealer will work fine. Trim away the surface bead and clean the entire seam with alcohol (to remove oils) before applying the new bead.
Sounds awsome considering that buying one new would be about 800.... I would go for it and buy the two tubes of sillicone and preston a good 300ish gallon tank...