Hello LLeopardGGecko, I read through your posts here and would like to give a little advice...bicals get MUCH too large for a 10-gallon. Since you grow Drosera, why don't you put them in the 10-gallon tank and use the 20 for the bicals. You mention your humidity is 30-50%; this is MUCH too low for bicals. From my experience bicals need some of the highest humidity readings of most Neps I have grown. Even a 20-gallon tank will eventually be too small for bicals, but it will give you a year or 2 with a small plant. To cover your tanks, save a bunch of money and go to Home Depot, buy pieces of cut glass, and for about $3 you can buy a glass-cutting kit (I was just there the other day shopping for glass for my new greenhouse). I would cut "2" pieces of glass that would fit snugly on the top of the tank, so you can accurately adjust the amount of outside air coming into the tank by simply adjusting one of the sections of glass. You can even glue a piece of wood on one of the pieces to create a handle for removing the glass. If you have the money, I would go to a thrift store (they ALWAYS have old aquariums for sale!) and look for a hex- or octagon-shaped tank because this will give you much more height that your bical will need. Just make sure you keep that humidity VERY high (like 80% or more!)
Ludwig
Ludwig