I'm not super into sumps at the moment...plus no room under my particular stand😁. But I can always unseal it if I change my mind. The silicone said to cure for 12 hours and I cured 24 and I'm going to test it out with water...think it's ready? I sure hope it works!!
If it doesn't ill try the PVC
way, but these holes are very close so if the cap is too big it still won't fit! (Bummer)
Sent from my iPhone using Aquarium Advice