Keep the water reservoir full so that the wicking mat can draw water from it
you can snip off what you need with scissors or garden shears
preferably into a media pellet dedicated to this purpose
Medium Grit Sanding Sponge - Keep your Wheel Hoe handles nice and smooth
For example
Garden Phos Fruit & Vegetable Plugs Keep the water reservoir fullGarden Phos is a systemic fungicide that controls a wide range of fungal problems in the vegetable garden. Made with salts of phosphoric acid, this product will effectively control powdery mildew, downy mildew, pythium, late blight, and more in common vegetable crops. Garden Phos is particularly useful to manage mildews in cucumbers, cantaloupes, summer squash, winter squash, watermelons, and pumpkins. For nightshades including tomatoes, peppers and