hi
r these spots caused by a lack of manganese? whats that then?

my thinking behind these spots with my very limited knowledge is that they are caused by the fact that the water i have been using is 6 -6.2 as i wrongly thought that it was the correct level. what does the clan think? also how to i reverse this?


For soil i should be nearer 6.8?

please help guys as i need to knock this on head right now!