Matt makes the best skimmers. I have a monster he made and it really works well. The craftsmanship is significantly better than any commercially made skimmer and it literally rips the organics out of the water. I would not trade this skimmer for anything. I cannot say enough good things about it. Not to mention all the help Matt gave in setting it up and making sure it worked properly, which it did from day 1. My skimmer is 55" tall and will be operating on a 500+ gallon system. I know it will be more than sufficient to handle that, especially if a Berlin can handle 300 gallons. ;)

His CA reactors are just as good as far as the quality goes.