Oncidium S/H update + leaf spots! (HELP PLEASE!)

[empiref]

I acquired an Oncidium on Feb 23rd of this year, it looked fine but the root mass wasn't at its best condition. I placed it in a S/H medium. This is my first attempt at growing an Oncidium. it's getting plenty of bright light and no direct sun light, it's been outside since a month, the pot is flushed weekly.

Lots of new roots have emerged since then and there's a growth of a new bulb and the growth of a new leaf.







However there's something wrong with the leaves, brown spotting is emerging at the tips and around the edges, can someone please help me with my problem.











There are no test kits here in my country, I have neem oil and alcohol, to speed up your answers.

Thank you.