Should i top at same time?

[Leelandgrow4]

Got a ph meter on way ph up and down I drilled holes in bottom to get some airflow to the bottom and yeah I have a fan on them temp 77 and at night 70-73 and humidity is 50- to 55 %

 

[Leelandgrow4]

Using tap water getting rid of that going to distilled water or spring water check ph then go from there yes nuts I just did table spoon in a gallon not trying to get nut burn

 

[Leelandgrow4]

I think it's a ph problem from using tap water

 

[Leelandgrow4]

My ph meter and ph up and down bud went down stairs to check and see this yellow spot on top leave

 

[Leelandgrow4]

And it's only that one leave