I just set up my first sump today. I bought a 20 gallon long from petsmart for 26 dollars which I think was a steal. I bought a wet/dry filter box and an overflow from aquacrylics a websight i found for 115 dollars shipped. The system holds 6 gallons of bio media. My return is a rio 2500 which is hooked up into 1 inch clear plastic tubing which then hooks up to a ball valve and goes into the display. The pump cost 52.99. I have nothing in the trickle, wet/dry box yet. I was planning on getting some bio balls, some filter floss, and some filter sponges tomorrow. When installing the sump I removed my HOB power filter. Was that a good decision? Also My DIY skimmer is still hanging on the tank but I just cant get the ting to work anymore so I will probably be buying an in sump skimmer sometime soon. I wanted your opinions as to what to but in the wet/dry box, and any general opinions of the system. All in all I think I had "Great Success"