Just get the biggest possible skimmer that you can absolutely afford. I have a euroreef, it is a model in which they don't make anymore, but it is comparable to the rs 80. I LOVE IT!! Seriously, you never ever need to adjust anything on it. All you have to do is plug it in and you never really ever have to touch it again. All you have to do is watch it produce the most discusting gunk you have ever seen in your life!! It is very reliable, and I just checked the website, and for some reason, they are like two hundred and something dollars off the regular price!!!! I would jump on that!!! ThatS my 2 cents.