How low is too low for humidity? The closet I have...

@GreenDiamondGrow yes 30% is a tad low as it can cause the leaves to become brittle and even snap off in extreme circumstances your 2 litre cool drink bottles a good idea for now but to get your closet humidity up a bit you can hang a damp towel in there and use a very fine misted spraybottle of water and mist every few hours Just be careful around any electrical devices if you do this. Otherwise a small humidifier and controller like an inkbird humidity controller could be of benefit depending on your budget.