Ok, I have read about as much as I can and need some assistance from the true experts. I am setting up/designing a 210 Gallon reef tank and am at a cross-roads on Skimmer selection. I have read a lot of good things about the ASM (Euro reef knock off) as well as the ETSS. I am looking at both the ASM GS-4 and the ETSS 900. Both seem well received, but the ASM/Euro reef seems to be in the lead. Any ideas, comments suggestions would be appreciated. Trying to minimize as many mistakes as possible. Thanks for any assistance.