I'm fairly new to this site so first I'd like to say hi to all of you! I started my first reef tank about 10 years ago but have been out of the hobby for the past couple of years. While the basics seem to have stayed the same I was surprised to see how much the equipment has changed. I've ordered a 45 gallon rimless tank, 24x24x18, reef ready and I plan on running a sump. I plan to have some SPS, chalices, acans, blastos and probably some Zoa's. I think I have the lights figured out but that's about it. I'm looking for advice on things like the return pump size, properly sized skimmer, stand designs (it will be a custom stand from a furniture making friend), tank circulation etc. Anybody have any problems or issues that I should try to avoid? I appreciate and advice.