thanks for you reply and Pms!
we bought a used ETSS 600 via reefcentral yesterday... if it,s not strong enought we can upgrade it to a 900 with an extension... 250$US
not too bad
so in maybe a week I'll have a skimmer for sale, octopus downdraft, good up to 150g-200g medium biolab. please contact me via PM for more info