leaf burn (?), on several different species, South Florida. Need help.

[acoff87]

Posting this from my not so smart phone.
I'm going to post pics, but I'm seeing leaf burn for lack of a better term on the following.
Marang, Jack, a few eugenia,  and rollinia.
I believe I used miracle grow potting soil,  I had a bunch. Probably not the best choice.  As for the Rollinia I was out of town for several days and it did get pretty dry : (.

[nullzero]

Using tap water? Perhaps it's from bad quality water.

[acoff87]

Yes I have been, will quickly stop that. I am also right across the street from the water treatment facility.
Is RO/DI water ok for plants?

[Guanabanus]

Probably deficiencies of Potassium, Magnesium, Manganese, and Zinc.

[wonderfruit]

Fertilizer to strong?

[nullzero]

Yes I have been, will quickly stop that. I am also right across the street from the water treatment facility.
Is RO/DI water ok for plants?

RO water is good, but you will need to add a low dose of micro nutrients to the fertilizer schedule or perhaps add some azomite into the soil mix. Diluted doses of fish and kelp fertilizer with bi weekly watering of RO water should help the plants.

[acoff87]

thanks guys! Happened all at once, a friend thought it could be viral. Got very worried.

Fertilizer to strong?

Will make that the routine.

[acoff87]

RO water is good, but you will need to add a low dose of micro nutrients to the fertilizer schedule or perhaps add some azomite into the soil mix. Diluted doses of fish and kelp fertilizer with bi weekly watering of RO water should help the plants.
[/quote]
correction