I built this incubator large enough to also use as a brooder. It's 5.8 cu ft 28x20x18. I am using two 150 watt lamps, a fan, and digital temp control as you should be able to see in the pic Using a bowl with a sponge but can't get the humidity above 25%.. Due to the size, would I need a larger container or different sponge? I read some of the other questions about humidity but didn't see any in relevance to the size of mine. I appreciate any help or suggestions,
