[Shakes]

I had read several reviews that were mixed. The inability to adjust it had me concerned but I was pleasantly surprised!! I think those who cannot adjust it properly, either did not read the directions, did not wait the 24-72 hours for a break-in period or have no idea what they are adjusting and therefore cannot make the proper adjustment. I found the skimmer easy to adjust. It does require some attention every few days (at least initially) to make tweaks to improve the skimming efficiency but otherwise it is a great product. I have a strong aquarium background with a solid mechanical understanding of how a skimmer functions so adjusting is easy. I have it as a hang on skimmer. One thing I did initially was to raise the skimmer about 4" over the lowest hanging setting due to the power of the powerhead. This made the fine adjustment a little easier. Once it was broken in I slowly lowered it about 2 inches which it is at now. I suggest start slow!! Have it not produce any foam for a day, then slowly dial it up to where it starts producing foam. Make an adjustment a walk away for an hour. let it adjust to the new settings before you make another adjustment. I highly recommend!! One drawback is it does take up quite a bit of room in the tank no not suitable for small tanks. I have a 58 gallon reef.