Thanks for all the replies ... I found those sites very informative and they basically answered my questions. I see that I can get some 2x4's or 4x4's and make me a stand w/o to much trouble if I decide to go that route. I am still a little confused about the canopy, from what I can tell most canopies just sit on top of the tank, ie no other support? Also that if I order a canopy that handles MH it needs to be one of the "custom" or "special" ones ... I assume to get the extra height needed for the bulbs. I guess the thing to do would be to buy a "retro" kit before building a canopy ... kinda build the canopy for the kit. I guess if I saw a couple of tanks and how they were done I would not have the confusion I now have. I don't want to end up with something that "doesn't fit." Sounds like I need to forget about 175 W MH and start pricing 250 W
I'm thinking about a 135 or 180 gallon tank ... 72x18x24 or 72x24x24 ... I am kinda in the middle, I want some corals and some fish, which ones I am not sure of. I know that I will want to stay away from fish that eat coral.
I see there are over 12,000 posts in here so I have got a lot of reading to do ... seems like such a wealth of information. Again, thanks for all the input and I imagine I will have more questions soon.
Dave