I think when you do your first tank.you usually do a few things wrong. Im sure every person on this site has done it if they say they havent probally lying or researched the heck out of it before they did everything. My first tank I decided I didnt want a sump well when I couldnt really go any further had nothing else I could possibly do to my tank in my budget I decided I wanted a sump. Bought a reef ready tank built a stand and a sump. This was about 3 months ago been in the hobby for a year this time did a tank 10 years ago but didnt have the people to help like on trt and I failed miserably. I would like a bigger tank now but really dont want to buy all the lighying again I have a 75 want tk stay in the 4ft foot print 90 is my only other choice.