if you go to home depot and get a light diffuser that they use in drop ceilings (little squares). if you look on here, you will find some pics of them. cut to fit in your egg tub. now you can get the substrate very wet. the eggs won't be touching the substrate cause they are on the light grid instead. a lot less chance of you messing up the ratio when not using the light grid. and I do open the container about once a week to check on the eggs. sooner if I think there's a problem or a problem might be starting. this will also let fresh air in. last 2 weeks before they pip, I peel back a corner of the press n seal to make a very small opening to leave fresh air in constantly as this is when they eggs require more O2. hope this helps don
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