Skimmate question

[jason604]

I have a euro reef 125 slimmer that has been pulling very dark nice looking skimmate. Till I decided to turn off the slimmer and clean its foam filter on the tube that adjusts the water lvl in the skimmer. After doing so my skimmate has been very light. Pretty much just normal clear tank water with just a very light tint of greenish yellow. And it the skimmate doesn't smell as bad as it use to. How I get it to skim as great as it use to?