Is this overwatering?

[Power.P]

Hey.

So I've got this wierd leaves on one of my plants. Checked a few threads here and there for deficiencies descriptions and I feel like this is overwatering except s few dots on leaves' edges here and there.
Please help me idetify the problem



It sits in a mix of Canna bio terra plus/perlit/worm castings/bat guano.
Was transplanted there 3 days ago.

 

[Bromeo]

What is the Ph?

 

[Power.P]

This is stupid I know, but I have no idea. Will get the meter tomorrow.

 

[Grim Reefer]

Looks like the start of cal/mg. Have you been using any epsom salts or cal/mg?

 

[Bromeo]

Maybe Cal mag. Also might be a little bit of Ph lockout. Don't rush out and buy a cheap Ph meter. Drops or strips work just fine to start. How long were the lights back on when ya took the pic? That might explain the shabby leaves.

 

[Power.P]

Briain: no salts or cal/mg used. It's all organic btw.
romeo: the lights run 20/4, were on for 17 hours before the pic. Actually I started to notice these leaves before transplantation and it only got worse. So I guess this might be related to pH in a way?

 

[Power.P]

BTW, do strips work with soil? Or we're talking water pH only now?

 

[Bromeo]

I'm talking the Ph of the water going in and the Ph of the runoff. Its likely Cal/mag but you really need to know the Ph. Its the starting point of diagnosing problems.

 

[Power.P]

Thanks mate, will get the meter and get back here

 

[Power.P]

Well, I'm afraid the pH is 6... Out to the store.