I'd like to install a sump basin and submersibile pump in my basement. Currently there is a pedestal pump in an open rectangular pit about 20X18X17 deep, there are weep tiles around the interior of the basement that drain into this pit. I saw a basin at HD that is round 18X30 deep. I'd rather stay away from HD products, where can I find other basins? Also the HD basin is solid, shouldn't they have holes in the sides or open bottoms to let the water in? The water table right now is about 15" below the surface, isn't a 30" deep basin too deep? Can the bottoms be cut off to the depth I need?