Light burn or nutes? Fast buds.

[Chamaican]

I thought it was lightburn at first, but now I’m sarting to think it’s some kind of lock-out or deficiency.
what do you guys think?
My tap water might have too much calcium, my coffe maker sure looks like it.
it’s all different Fast buds autos in autopots with soil.
Canna terra flores half strength nutes.
640w led 8 bar style from philzon +mars tsw2000.
4x8 tent

 

[LearningMore]

I’m a newbie, so I’m sure one of the knowledgeable folks will answer soon. I know they’ll ask what your pH and ppm levels are of water, though, so adding that may help you get a better answer. Which soil you’re using is good info too (one of the smart folks here helped me figure out my first grow was failing because of bad big-box soil).

I feel your pain - I hope you get this sorted fast!

 

[Chamaican]

Ok, a little bit of info:
Ph seems to be around 7.2
Ppm around 380
Tap water before nutes: ph 7.2 and 180ppm
The soil is from the grocery store, so nothing special for cannabis

borrowed some cheap AliExpress equipment from a friend to measure, i hope it’s the correct numbers.

 

[LearningMore]

After you mix up your nutes, check the pH. For soil, you want 6.5ish. @Mañ'O'Green put together a great tutorial here on AFN: “a word on nutrients”. It’s stickied under New Growers Forum.

@Proph often posts a great chart about all the lockouts that can happen when things get out of balance. Scan the infirmary and you’ll find the chart pretty quickly.

My (very inexperienced) impression is that your issue is likely pH-related. Apera makes a quality pH pen that is reliable and not too expensive (the pH60 model is $80 on Amazon). The $20 options are crap.

Lessons I have learned that relate to your grow:
1. Do not cheap-out on soil. Research the brands used here and buy one of those (I like Fox Farms Happy Frog; their website can tell you close dealers rather than paying Amazon prices).
2. Do not cheap out on pH pen and use it to check anything you put in your soil. Check the calibration weekly.

I hope this helps. Good luck!

 

[Chamaican]

Thanks! I’ll try to do some reading.
Already bought some BioBizz light to try on the next grow, I hope that will make difference.

 

[LearningMore]

Thanks! I’ll try to do some reading.
Already bought some BioBizz light to try on the next grow, I hope that will make difference.

The difference between Kellogg soil from HD (crap) and Fox Farm Happy Frog is truly night and day. You can SMELL the difference in the soil, let alone seeing the difference in the plants!

 

[Chamaican]

I think it might be Nitrogen deficiency, could that be correct?