mate, that looks like some sort of mite strike or fungus ... never seen it in my part of the world. otherwise yr plant looks real healthy. I certainly wouldn't give up on it yet.
try a flush thru of molasses at 15 mils (one tablespoon) per 20 litres. this is not to feed the plant but to give it strength by boosting its sugars. molasses also works great on plant pests.
next change yr plant's position to get as much sun as you can and make sure there's plenty of airflow around it. this plant is not kept inside is it? like how many hours of sunlight does it see daily?
yes, you should amend that, but the easiest way to do that is to stop why it's happening!! why's it happening? lack of sunlight? overwatered? over nuted? under nuted?
no man first time i heard that term "Molasses" here in venezuela where i´m from we use something called "PAPELON" for make sweet drinks with lemon ... maybe it´s the same that molasses now i´ll tell you something
since 5:50 am she recieves SUNLGHT until appear the moon
watering it´s been watering with rainy water the best water for her
here its raining all time
nuted what is that nutrition¿??
today she shows better health ,,, im happy for that
Get that plant into a bigger pot and better soil and flush it. Just get some Bloom Nutrients,cal/mag. Get some PH buffered soil. You should be able to finish this one. Read some more and get all the stuff you need before you start anymore.
thanks .. yesterday i bought new pot bigger and soil and nutrients and something for this black points .. next days i will show you the progress of the plant!