Help a guy who is a noob to plant problems

I did expensive google search and I think it's manganese def.... Any opinions?

Tying to upload pic lol
the last plant on the corner. They all have a leaf here and there but thT one has a couple.

went and got some cal mag, more maxibloom and ph up.. should be golden now i hope. what should i do with effected leafs? leave them on? will they heal? ive never actually had a plant issue before.

no tthey wont heal but i wouldnt go pluckn them off let the plant decide whens its time for that

i normally dont mess with the leafs, but i know some people do, it doesnt reallt effect it anyways