Help, why is my humidity dropping like a stone when my lights are on during the night and it is ok when lights are off midday to 6pm

@gregthe357 thanks for the info, will keep in mind 👍

As they get older and subsequently bigger they will transpire more. Also, as air gets warmer its ability to hold water decreases.

Cheers, just feel they could do better without the spikes, new setup should help, will be all set by start of August.