First issue is the water level shouldn't have been fluctuating up and down and that tells you the air/water ratio wasn't correct, and could have possibly fixed or solved with the use of a dursostand pipe or stockman modification..........
2nd issue is the skimmer, and it was hit on briefly that all equipment should be checked daily and on a new system you just don't fire and go bout your business....There is alot of tweaking you have to do after it's running to make those fine adjustments and all......Take a look at my thread on my 240......I've spent way to much money on some of the best equipment out there and guess what???? It doesn't just fall into place you have to work the equipment and modify at times.......Take a moment and review my thread......These guys with quiet, reliable systems just didn't go to the store and buy it......they researched, modified and tweaked, till they got it acceptable......If your looking for a box of fixes you can buy off the shelf this isn't the hobby!!!!!!!!!!!
I don't mean to preach, alot of these issues could easily be solved by coming to this board or any other board and just posting the issue, and you'd get 50 answers or solutions to the problems.......This is one of the friendliest boards around IMO.
As far as the skimmer issue, alot of people will tell you to research any investment 100 times before the purchase, and they would have advised greatly against the purchase of the Prism skimmer.....they are unreliable IMO and quite a few of others, and they need constant tweaking.......I had a chance to help a person running a small operation with these skimmers, and they are just pathetic IMO......They could be tweaked several times a day.....You could get them running good, and come back 3-4 hrs later and they had already started to overskim.........they just aren't reliable, and for it to overflow and soak the carpet, and such just shows, there wasn't a check done on a new system........
Again new systems have to monitored till you are confident with them and tweaking is part of the game......I've been flow testig my system for the past 2 weeks with just freshwater and I'm not pushing daisies when it comes to flow....I can push easily 2200gph through my sump with no microbubbles, and you think I'm not going to have sleepless nights, and days doing constant checks on flow, pumps, water levels, and such???!!!!!!
NAH............Then there's the beast of the MRC skimmer.........You can hear that thing sucking air a mile away, and that needs constant attention while breaking in.........
Again this just isn't one of those hobbies you go to the store put the kit together and everything works peachy, and we walk away from it and say neat!!!!!!! This is a hands on, attention to detail hobby, always pushing and testing your abilities and limits.........