Help!!! Can someone explain what this is.

Shows_world

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If you look at the leaves you can see brown lines. I’m using coco coir with perlite. general organics go box nutrients. Ph going in 5.5. Ph coming out 6.3. Using 1000w led grow light. Temps 81 degrees and humidity 50%. Grow tent 2x4x5.5.
 

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Looks like the being of phosphorus def. And your new growth where you topped it looks funny in a different way. Not too sure. Have you had any ph issues?
 
I don't think you need to panic. Now is time to think this out and end run any major issues. I'm still sticking with phosphorus, the purple stems combined with the brown marks less me to think so. Did you top or fim?
 
It swung high for a bit. 7.2 ph was the highest and once I found out I flushed it immediately and got it back in range (6.3). The ph runoff always fluctuates a bit so I been changing what was going in from 5.8 to 5.5 ph.
 
This is what I feed it every day. 5ml of everything.
 

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Here I'm bored tonight so I did a little reading. I know your not in soil so you probably need more phosphorus than this dude did. I will post the link to this thread at the bottom.

his is common with GO and Roots Organics Soil. If you plants are a month old, you should be feeding heavily. To prevent the phosphorus def that results from using the GO according to the instructions in veg, Half and half your Biothrive Grow and Biothrive Bloom. 10ML Grow + 10ML Bloom per gallon. Also, you should be using the CalMG+ at 20ML per gallon. That will fix your problem. Now, to make sure you dont run into that problem in the future, add some Rock Phosphate to your soil prior to planting in it.

https://www.rollitup.org/t/general-organics-nutrients-help.605090/
 
It’s getting worse. I upped the nutes today 5.5ph. Run off back to 7.0 ph .
 

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I think you will be ok. Take a pic Saturday and compare. The damage you see now isn't going to go away, you'll be comparing to see if it is worse.
 
Keep your ph 5.8-6.1 going in. Magnesium uptake is better 6ish. At 5.5 the level of magnesium uptake is very low.
Don't chase your tail measuring run off in coco.
 
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