i have a few of the cheapo hob filters from walmart, could i drill a hole in the back of one, silicone a pvc elbow in and just plumb it to a sump just letting it suck the water into it? im also going to use a small piece of acrylic to block off where the water normally runs back into the tank. im not to good at writing stuff up lol but if this is understandable would it work?