Nutrient burn?

[DonkeyRichard]

I have a week old plant in a dwc ive given 3/4 of recommended dose of flora series nutes my water is at 5.6 ph and ppm is around 550 i only see brown tips on lower growth

 

[Heavenly Hybrid]

Hi there DR, it doesn’t look like nute burn to me. I’m wondering about the little white specs when I zoom in on the picture. Any chance you got little critters?

 

[DonkeyRichard]

No critters i was mixing up some soil and it looks like some perlite dust settled on the leaves

 

[DonkeyDick]

Hey there Mr Richard!
Starting a grow journal is a good way to get ongoing support throughout your grow. Lotsa helpful folks up here.
How close is your light?
What are you feeding the plant/ how much/ how often?
What is the strain?
How old is it?
What’s your medium?
Some of the dark, necrotic patches just look like some nute splash happened (leaves hate calmag - always wipe it off) otherwise maybe lift your light?
Someone knowledgeable will be along, no doubt.
Posting some answers to those few question will save time.
Good luck!

 

[Heavenly Hybrid]

Whew! Good to hear. You might want to add some more info about your grow - nutes, ph, etc. it helps diagnose. Without that info, I would say the possibility of calmag deficiency or potassium deficiency with it on the leaf edges like that. More info about your grow will help us figure it out though.

 

[Herby Paisley]

Might be a lil nutrient burn.... In the beginning try to use only 1/2 strength nutes or less to start then build up your nutrients as the weeks go on and they grow bigger, Its best to invest in a PPM meter and a PH meter to keep an eye on your mineral and salts build up and acidity level in your water when dealing with a DWC system. If it is for sure nute burn then just add some fresh properly PH clean unnuted water and you should be fine