Plexi-Glass for a 20 gallon tall planted

[duke33]

covers help prevent evaprotive loss, especially in the winter when the furnace is running.

When the evaporation gets below the rim it's time for a wc anyway.

 

[Kashta]

When the evaporation gets below the rim it's time for a wc anyway.

I hadn't thought of that, but you're right. It doesn't make any difference.

I live in a very dry climate, so the added humidity from fish tanks and houseplants is refreshing.