hello friends , I have a 2ft w x 2ft w x 8 in deep square hole in my basement floor which was left from the home construction so a Standup shower stall could be added later. It was originally open to the dirt under the slab. It has a 1-1/2 drain pipe coming in from the side. I poured some sacrete into this hole and painted it with Damdite sealer. After heavy rains this well fills with water and floods my basement. What is the correct way to seal this well and still later on add the shower stall above. Your professional help will be greatly appreciated. Thanks Jerry