Drill overflow holes near the top of the bottom try (so that water isn't in constant contact with the top tray). Use tape to attach the two trays (I used "Gorilla Tape") to keep insects such as mosquitos out of the water.
Drill overflow holes near the top of the bottom try (so that water isn't in constant contact with the top tray). Use tape to attach the two trays (I used "Gorilla Tape") to keep insects such as mosquitos out of the water.