Thoughts on over skimming

[sphelps]

Anyone have experience on over skimmed tanks? I'm starting to think my tank is being over skimmed as I'm noticing a decline in some LPS coral health. SPS corals are doing well with good color but LPS corals like acans, brains and lobos are beginning to suffer. I've always noticed that LPS corals do better in tanks with more organics and SPS corals are the opposite. In order to find a healthy balance I'm considering running my skimmer on a timer to only skim overnight.

Any thought or experience would be helpful. I run a BK SM 250 on a 120 gallon system.