yup way to wet. the first one has a hint of algae starting to grow on top. U have a fan blowing on them?? will help dry them blocks out some. What are drippers set at?? IMO I think cutting down to 1 watering per day is to much of a cut, I would try 2 waterings 12 hours apart and if you can cut time down lower than 15 drop it to 10 mins.