What is this?

So I know the purplish is phosphorus deficiency. I flushed them mabe 3 weeks ago and began to give them fox farm trio. I give them half a dose every other feeding. I test them using my meter to see what the ppm are before feeding. I wait until there at 200 ppm until I feed. I dont get get what I'm doing wrong. Didnt give them water yet so don't know whats the current situation with the ppm.

They're starving. 200ppm is nothing to a flowering plant. You're waiting for 200ppm what? Runoff?
Feed them. Regularly. This girl gets 900ppm daily

They're hungry ... feed them. Like Johiem said,.... you need to be at 900-1000ppm at this point. ... Provided that you have enough light .

N - P - K underdose.
Anytime you see yellowing fan leaves, starting from the lowest leaves, you have a Nitrogen deficiency.
It is a good detail to familiarize yourself with and keep an eye on.
They should perk up again, no worries, they still have a ways to go.

Johiem said:

They're starving. 200ppm is nothing to a flowering plant. You're waiting for 200ppm what? Runoff?
Feed them. Regularly. This girl gets 900ppm daily

Click to expand...

I just tested them. One is at 658ppm. The ph is 6.0

DoubleAtotheRON said:

They're hungry ... feed them. Like Johiem said,.... you need to be at 900-1000ppm at this point. ... Provided that you have enough light .

Click to expand...

My grow journal states that last watering those two plants were at 700-800ppm. Now one is at 620ppm

Your going waaay to light on the nutes/ppm. I personally run my grows at about 1500ppm in flower. Have never had any issues.

Ayokiwi717 said:

My grow journal states that last watering those two plants were at 700-800ppm. Now one is at 620ppm

Click to expand...

Stop looking at runoff or what you think is in the soil. You need to maintain EC levels.

DirtyJerzey said:

Your going waaay to light on the nutes/ppm. I personally run my grows at about 1500ppm in flower. Have never had any issues.

Click to expand...

Are they autos tho?

Whats going into the soil now. Upped nutes to 3/4 dose

Creature1969 said:

Stop looking at runoff or what you think is in the soil. You need to maintain EC levels.

Click to expand...

What are ec levels? Im experimenting with nutes to say the least. Last year I burnt the crap out of them . They look better than last grow tho, so thsts good. They are going on 9 weeks. This Saturday will be 9 weeks

Ive done bone my photos and autos the same. Have never had issues, could simply be the strains Ive been growing though. Auto AK47, Photo White Widow, Photo Gorilla Blue, Auto Strawberry Cheesecake. That's what Ive grown over the past year with that ppm config.

EC is electrical conductivity or salts in the solution. Don’t follow nute directions add them to water until proper EC

bam0813 said:

EC is electrical conductivity or salts in the solution. Don’t follow nute directions add them to water until proper EC

Click to expand...

Is the ec the ppm

Ayokiwi717 said:

What are ec levels? Im experimenting with nutes to say the least. Last year I burnt the crap out of them . They look better than last grow tho, so thsts good. They are going on 9 weeks. This Saturday will be 9 weeks

Click to expand...

Basically, EC is a conversion from ppms. Same thing, different number. More commonly used because there's only one scale to EC where ppm's have three scales depending on your part of the world or meter of choice. So, if you say 600ppm, we don't know if you're feeding 0.8ish EC or 1.2 EC. That's a pretty big difference.
Conversion chart for better clarification::

Ayokiwi717 said:

Is the ec the ppm

Click to expand...

Similar but a better measure. The cheap meters can be converted or may have mode button. It's a little crazy. Just get a BlueLab truncheon. Worth the money.

I read my runoffs because it tells me about the pH and the EC levels and makes it easier to maintain with less guessing. E.g., I discovered I had a bad tub of a nutrient when I saw the pH rising in the runoffs.

Offmymeds said:

I read my runoffs because it tells me about the pH and the EC levels and makes it easier to maintain with less guessing. E.g., I discovered I had a bad tub of a nutrient when I saw the pH rising in the runoffs.

Click to expand...

I have a mode button?

Offmymeds said:

I read my runoffs because it tells me about the pH and the EC levels and makes it easier to maintain with less guessing. E.g., I discovered I had a bad tub of a nutrient when I saw the pH rising in the runoffs.

Click to expand...

Is that the ec

I believe that is micro seimens per centimeter. (EC)