hi mate, give them a some fresh air, humidity domes are great if you are cloning a lot of clones, if you only have a few then give them some fresh air, it looks to me as if there cooking a little, how hot is it in there, i have a humidity cloning chamber, but only use it when i wanna clone more 30 babys, they seem to cook when there is only a few in there, a bit like spinach in a steam cooker, if you have heating under the tray turn it off and just let the light heat them,
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