Questions about hatching duck eggs in styrofoam incubator?

It seems to me that you have a home made unit. You should keep enough water in the bowls to maintain 88 % humidity and 94 % the last three days. You can pick them up. Eggs should be on the side, not the point or larger end. Turn them about a quarter of a turn three times a day. Try a hole two or three square inches each top and bottom and close them down to maintain 99.5 degrees F at the eggs.