Okay, I got on another computer; I hope SWF fixes the site soon, because doing a new thread this way sux. I need a step by step guide to create a sump without drilling my tank. I Googled for information, and I now know it is doable…..I started this thread so I can talk to someone as I go. Is anyone willing to become my sump guru? I have 90g reef tank, established 6 years….My stand has limited room under it…can a 20g tank work for a sump on a tank my size? If the answer to this question is a yes, then it is still doable for me. I also would like to put my stupid micro bubble creating coralife skimmer in this thing. What do I need to do to set up the 20g tank as a sump? I see different chambers; can I make separate chambers with Plexiglas, (or do I need to have some glass panels cut) and hold it with clear silicone sealant? If so please explain in detail how much space per chamber, and what each chamber is for and what goes in each one. I know I need a pump..What size, what type..Any idea how much it will cost? I found an overflow box on SWF for around $90.00 will that one work for what I am trying to do, on my size tank? Please keep it in very simple to understand speech, I know NOTHING at all about sumps, for 30+ years I have used canister filters. This is not a build as I go thing YET…I am a get the information first kind of person, I won’t even try it until I feel I can actually do it. Thanks for any help on this!