Hi there!
I've been interested in reef tanks for somewhere around 15 years now, ever since I stumbled across some beautiful pics on the garf website way back when. Never seemed to have the money or time to pursue it though, until recently. I was gifted a 55 gallon tank and stand by a friend moving out of state. After getting it in the house, I decided the stand was too narrow of depth for the height for my comfort (I have 3yo and 5yo grandchildren living in the house right now)... But the bug was set. I own my house and I have a reasonable income and free time now, it's time to pursue this hobby.
I spent days researching on youtube, forums, etc. learning about setting up a tank, running it, maintaining it, etc. lots of good videos by BRStv and Aaron's Aquarium... and started putting together a list of equipment I'd want to start out with... lights, filter, RODI filter, wave maker(s), etc etc and also started looking for a more appropriate tank. I mean maybe the 55 with the 14 inch deep stand that sits 58 inches high with the tank would be fine, the weight might be enough that the little ones couldn't tip it over, but I'm paranoid and I'd have a neverending anxiety attack over it.
I really didn't want to go much higher than the 55 gallon at first, but I ended up with a 90 gallon. It was a local post on craigslist, the tank, stand, canopy, sump, RODI filter, protein skimmer, and a ton of miscellaneous stuff I'm not sure what all of it is lol. Plus what felt like about 200 pounds of rock that he said was live rock. It looks like there's several pumps. The stand and canopy both need some love, and all of the gear is pretty grungy and needs a good cleaning, but I only paid $160 for it all, and now I've got a ton of work to do. The protein skimmer, I honestly don't know if it's all there or not, he said something about a lid being in one of the totes but I haven't found it. There's no markings anywhere on this thing, so I don't even know where to start on that. The biggest reason I even bought this was because I figured the RODI filter alone was going to run me about $160 anyways, so everything else was just icing on the cake. I worry that 90 gallons may be a bit too much tank for a beginner though.
My plan was to start cleaning things (I know not to use chemicals) and identifying all the miscellaneous equipment, get the sump and plumbing and pump hooked up and leak test everything, then slowly start getting the tank aquascaped and running, test the water conditions, add a fish or 2, make sure everything is stable for awhile, then dip my toes into a coral or 2, again make sure everything is staying stable before introducing anything more.