After much thought (more thought, and ‘re-thought’) I recently bought one of their seamless sumps. I decided the versatility to design one’s own system was rather unmatched—not to mention you can tell the tubs are indestructible. Mine is a bottom-drilled tank, and so I have my drains draining down into a plain 21” long tub, which holds a recirculating protein skimmer (the way to go,) and the return pump. Now I have purchased a second 21” tub, which will be connected to the right, and will hold media reactors. Before too long I will order a third (and final) 21” tub, plumbed in tandem, to hold a large algae scrubber that I made from about $20.00 worth of pvc materials (not counting the light, of course). The algae scrubber will actually stand inside the third tub as it doubles as a refugium. I will try to post a photo or two before long, as a picture is worth a thousand words, right?