Planted Tank Obsessed
Join Date: Feb 2004
Location: Westchester County, NY
Don't worry much about evaporation, since that will keep your water temperature down a bit during the warm months. To keep fish from jumping our of the tank, use "eggcrate" which is that plastic material that is generally used under flourescent lighting in ceilings. It comes in white and also in a "chrome-like" highly reflective form. It's very inexpensive and available in Home Depot and stores like that. When you use plexiglass or glass, it inevitably gets covered with a white film from the minerals in the water that will shield out light. The "eggcrate" won't do that. Also, when you cut it down to the size you want, it sits in the inner part of the rim around the top of your aquarium and won't interfere with the legs of your lighting fixture.
And, yes....the frogs will take the eggs...any eggs once they figure out that they're there.