I'm having problems with mildew on plant leaves. I have wicks in the containers, but the plants seem to take water best by watering from the top. Because I use a mylar hood for lettuce and tomatoes, condensation gets on the hood and the plants get mildew. if I leave the hood open on the sides, the tomatoes complain about not enough light.

What's the best way to water plants that are growing under grow lights?