Pest/fungi problem with outdoor Amnesia Haze

[HaroWana]

Hello everyone!
I am new to this community and this is my first time growing cannabis.
I am currently growing autoflower Amnesia Haze outside on my balcony, but the stems seem to be stuck and have not been growing any taller for the past week.
Recently, I noticed some white marks, as well as some tiny black spots on the leaves of my plants. The lower leaves of the plants have also turned yellow.
After some research, I believe my plants are infested with spider mites and I've just started to treat them for that this morning.
I am not sure this is the issue though, which is why I would greatly appreciate the input of anyone who might know what is going on with my plants.
Thank you in advance for your precious help. <3

 

[pute]

I can't tell from the pictures but it they are mites the should be easy to get rid of at that stage. I use azamax! 3 or four applications every two days to break the cycle. You have to get the eggs. Make sure you get under the leaves with a 360 degree sprayer.
Good luck

 

[Micheal Sandford]

Make sure to check your earth had soil or not, If doesn't have improve the earth soil with copper and magnesium sulphate etc., Just try this once and see the better results....