put upside down coca cola bottle, 500 ml water from
tank-rain water, in aquarium 27 degrees - , see salt 2 tea spoon,1/4 tea spoon eggs, backing soda pease size, good air flow. After 30 hours, on bottom of bottle it's a lot of eggs.
The only thing I could work out Alan, is that the salt wasn't enough. Mine runs at around 27 degrees, even hotter in the summer. I don't have a light on mine but it doesn't seem to be an issue. I put one on about 10 mins before I want to remove them.