[jeff]

you use what water ?
have you 'mucilage ' on the leave , see with a magnifying glass?
I think especially on the 2nd image the leave have been attacked by something .
have you bird or snail-slug in your cultivate area ?

to have a lot of 'mucilage' often it is necessary to have a difference of temperature between the night and the day , please also no plant in sun light , in shade in your country , it is also may be the reason

jeff