Thanks for "voluntolding" me, Will!
![Grin ;D](https://ohioreef.com/Smileys/default/grin.gif)
To start, you have a very nice "newbie" tank!!
Will is right. We have a 40g long tank, and when we first started we just had a 10g sump (with no problems.) I recently upgraded to a 20g sump and moved the 10g sump to be the sump for my 10g frag tank.
I'd avoid a canister filter like the plague. I've had them before, and they're too expensive and unreliable. If you have a cheap junk one, they're great as a carbon filter or phosphate remover...but that's about all.
If your tank isn't drilled, you'll need to get an overflow box and U-pipe (may be purchased locally from our sponsors probably...sometimes you can pick them up used.) The expensive part is the pump to pump the water back up to the main tank. We started with a 500gph main pump with our 40g. We've recently upgraded to a 1200gph pump since our 500gph pump was going bad. (And the 1200gph pump is a bit much now.) The good thing is, is that this pump with help oxygenate your water...which will help with coral health. Additionally, the sump will provide a refuge for copepods and other awesome critters.
Making the sump is the easiest thing ever. If I can do it, anyone can. Basically, make sure a glass tank the size you want will fit through your doors on your stand. The bigger, the better. With the 10g, I bought the 8"x10" precut plexiglass panels at Lowe's for a couple bucks a piece (I think they were like $1.64 or something.) Anyway, I also got some clear aquarium silicone. I didn't even bother to cut the panels to the correct width on the 10g. I just stuck them in there sideways and siliconed them in (check Melev's page for baffle design). Let it dry for 24 hours...and you're done. The only part to be careful with is making sure that the volume that will drain from the main tank when the pump is off will fit in the sump.
If you decide to go this route, I'm sure I'll host a meeting soon and can show you this. The sump cost me a whopping $10+the pump+tubing+overflow/u-pipe. My 1200gph pump was around $100...so, worst case, $150. I'm sure you can get a 500gph pump cheaper. IMO, for the cost versus benefit...the sump is definitely the way to go.