Using them for about 4 years. If you want a super basic light set up this is decent but the controller on this unit is the major down fall. Not user friendly and I'm on my third box. If you customize the timing schedule to your desired settings and the power goes out, those setting are lost.
It's decent for a start up but be warned that the metal brace/support arms will rust and that rust can eventually start leaking into your tank (from rust flakes). All 3 of mine did and battling my most recent one that was replaced now.
The Pro version might be a better option though I don't have experience. Once this one goes, I'm moving on to another brand for sure. I need something I can control easier and more reliable. Search the forum for Chinese LED bars and boxes too. IMHO there's a lot better options today. Also note I have a 90G with once Marine orbit. I added a dual T-5 light from ATI and I've now added another dual T-5 light just to keep my corals from stretching and giving much better growth. So, now I'm running 4 ATI T-5's and my Marine orbit. You'll end up doing the same in time especially with a 125, or just start with something stronger and save you some headache and aggravation down the road. I'm on a tight budget myself and wish I just got a few Chinese LED Black boxes to start, lots if happy users in here and they provide more than enough light with smart apps and very easily controlled. If you get the M.O. wipe down the braces with a damp cloth and dry daily or weekly at best to prevent the rust. It's just a matter of time when it'll start