Please help diagnose!

[AceOfClubs]

One of my outdoor plants is developing yellowish new growth and one leaf has an odd white spot..
I originally had these plants in fertilized soil then switched to pure coco about 10 days ago and have yet to fertilize because I noticed nute burn and didn't want to over fertilize again. But now I'm thinking the issue is because of lack of nutrients??? Let me know what you guys think, thanks in advance!!

 

[Chris Scorpio]

Coco needs water and nutes daily since it has no way to retain any nutes

Water her with nutes my friend

What's the pH of yer water she is getting

 

[AceOfClubs]

Coco needs water and nutes daily since it has no way to retain any nutes

Water her with nutes my friend

What's the pH of yer water she is getting

Oh shit my bad! I'll do a light water concentrated with nutes, we're supposed to get lots of rain tonight so that should wash the nutes through the coco..

I tested my tap water and it was about 6.5 ph

It's my first time growing with coco so thanks for the help!

 

[Chris Scorpio]

Coco pH, after adding nutes, around 5.6-6

Keep that in mind