How big is your space?
I’m in a 4x4. Very dry here. So I picked up an Amazon humidifier (probably the same as a Walmart one). Quickly ran into 2 problems.
First, I had to refill the thing every 12 hours to keep it running. Of course this doesn’t happen. Second, it wouldn’t stop running until it was out of water, so it would go from too humid to bone dry every day. Literally, my hygrometer would show min/max humidity at 27/99.
So I bought a different humidifer from Amazon. It only holds a gallon of water, same as the other one, but it lets you target what humidity you want. I set it at 60% and a gallon lasts about a whole 24 hours. Seems to be a nice balance between the amount of humidity the unit puts out vs. how fast the 6” filter removes it.