Update on Skimmer after 6 months of constant adjustment. OK, so I had this skimmer for 6 months now and It is non stop tweaking just because the water will fluctuate 1/2" in height every so often. It over flows after every power off ,so you can't shut it down to feed. I do water changes with it off and have to retune it after, even after I bring water to same level. So I don't recommend You buy one of these unless you want a lot of work! I also own a coral life 150G cone skimmer which is a little better but not much. You can't do feed shutdowns or blackout/brown outs it will over flow. I just bought a Super Reef Octopus SRO-5000Ext off of ebay for $341.00 - $125.00 for shipping damage refund for a total of $216.00 that I will be quickly repairing. I plan to adapt a new RO-DC pump to it, to hybrid it in efficiency of consumption. The pump uses 45Watts for the recirculation pump and use the return pump to feed it.