the color of my water

[Delphinus]

You skimmate is more concentrated than those others you've seen. Whether this means it is because you have a more efficient skimmer or because you simply have "more stuff to skim" I can't say, but, you say your water is nice and clear that tells me it's more likely that you simply have a better setup going as far as your skimmer is concerned. It's doing its job. HTH