Light burn or deficiency?

[Mainemedical]

I'm about 6 weeks into my cream caramel grow and the tips are turning yellow and curling up. I lowered my 600w hps to about 15 inches over the tops but it hasn't gone over 75 degrees. Could it be a deficiency or are my lights just too close?

 

[ninja1]

Is that week 6? I would expect to see more bud sites :/ dont know if thats part of the problem? I wouldnt be 100% but soon as my plants start going pale i feed never had a plant go yellow sure someone here will hope. Hope she bounces back for you mate.

 

[longhair]

I agree with ninja1,not two many bud sites,but to me it looks like,too much water or over use of the veg ferts at this age,I've seen this in some of mine,keep the light at 18 inches.

 

[stylez]

Give this a read Guides to Plant Problems. what is the ph of your soil and water that is fed. How often do you feed her.:cry:

 

[low_and_slow]

Something is way off in your feeding regimen...I'd suspect your pH is off in a big way, looks like nute lockout. Try to raise your light to 18-20 inches as well, 600w is a TON of light for 1 little auto.

 

[Mainemedical]

I had a ph problem early in my grow because I started out in the wrong soil but I flushed them and have been feed them with nutes phed at 6.5 and watering them between feedings. They only get water or nutes every 5 days or so. Also I have 6 plants in my tent not just the one. Waiting for my new ph tester to come in the mail so I don't know the current soil ph

 

[ninja1]

Is it just this plant or others like it too? What strength of nutes are you feeding? Always been told less is more.

 

[dank0r]

Maine you need to know your soil ph first!! to be able to know what needs to be adjusted!! I've learned a lot about ph reading jm guides! In my current grow I started feeding at 6.5 and turned out although i was going 6.5 it was coming out at 5.4!! had to flush 3x the container size with water ph'd alot higher 7.5-8 just to get the soil ph higher! I learned that when you ph your water its not as much as whats going in its more about what the soil is at!! Ph tends to fluctuate as it chemically changes in the soil!! So for example if your soil ph is 6.0 and your ran 7.0 3x the amount chemically in the soil you raised the ph to lets say 6.2. But I hope you have a idea of what I am trying tell ya!! Check out JM guide on PH!!!! Good luck bro!

 

[dank0r]

Make it easier for you bro

https://www.autoflower.org/f42/ph-potential-hydrogen-manual-polled-12594.html

Make sure yoou thank JM for this !!

 

[ninja1]

I dont test no ph with my grow :/ i was told the soil buffs the water anyway so is no need