issues with corallife super skimmer

[robzilla]

help, i'm having issues with my skimmer. it's seems i cant adjust the volume of water and bubbles down to a level where it produces nice and dark skimmate. i had to put on a flow adjuster to turn down the volume coming into the skimmer, other wise it would fill up the skimmer with a water.
by turning down the volume you also turn down bubble production.
any ideas? the skimmer went crazy producing light coloured skimmate after adding some marine buffer 2 weeks ago. it seems ive had issues since then. could the buffer be the issue? how long would the additive effect the tank?

any ideas?

thanks
rob