df first grow, help, do i have a problem?

[df65]

This is my first grow.

This is day 23 of flowering.

Indoors, with 12 plants. 6 blue dream. and 6 headband. In soil.

3 1000 watt vented hps, 10 in fan thru the lights. 8 inch fan exhausting out of the room. 6 inch fan drawing fresh air into the room. window ac.

nutes = gh, floragro, floramicro, florabloom, diamond nectar, liquid koolbloom, floralicious, calimagic, hibrix, and carbo load.

I water approx. every 4 days. I have a moisture meter, but mainly I use the lift method. When I water, I soak the plants until there is about a 10-15% runoff. My ph is approx. 6.2-6.6.

the temps in the room run between 69.5 as a low, and a max of 79 deg.

 

[Nwgrower420]

Whats your ppm? Did you give them a flush before flower? Do you feed with every watering?

 

[budnoob2]

At day 23 of flower after stretch I would expect to be watering less but more often and on a Feed, water, water, water, feed or Feed, water, water, feed at most. Total PPM should be no more than 1000 except for week 5 and 6 where hungry plants can enjoy up to 1500 PPM. The watering you describe is for root development and most effective in veg but not flower in my opinion.

 

[df65]

PPM= 800-850. I did not flush prior to switching to flower. I feed every time I water. These leaves came from about 1/2 way down the plant on the outer part of the plant. Only one other plant has any leaves like this, both plants with this problem are headband.

 

[df65]

Because of where these leaves were located, and the fact that the plants are so packed together, I didn't know if it could be from a lack of light or ventilation.

 

[Nwgrower420]

It looks like lockout to me..

 

[df65]

Is there anyway to know for sure, or is my best bet to flush all of the plant?

 

[Nwgrower420]

I would flush all of them with 2-3 times as much water as there is soil in the pot. Atleast the ones showing signs of lockout. Wouldnt hurt to feed with 1/4 strength for a week afterwards and wouldnt hurt to put some vitamin b-1 in there.

Good luck!

 

[df65]

What is the purpose of vitamin b-1? When I get home from work tonight, i'll go thru all the plants and see if any others are effected.

THANK YOU to all for the information !!

I keep saying that this first grow is a giant experiment. The adventure rolls on.

 

[budnoob2]

If it were lack of light you'd have leaves fading into yellow and not burned looking. You've been feeding too much and have salt buildup causing the lockout so I agree with the flush and then stick to a feed, water only, water only, feed schedule. I also agree with starting off with 1/4 strength and building up gradually and watch for any symptoms in new growth - back off if new growth exhibits any lockout issues. 40% of your total PPM should come from Mg i.e. Cal-Mag or Cali-Magic during veg up to the end of stretch and then switch to 25% Mg using a Mag-Sulfur supplement such as B-1 or FloraNectar after the stretch. If you experience leaf drooping at the end of the day then a Silica additive may help.

 

[df65]

one through all 12 plants, and only the headband plants have any leaves that are turning. Each plant had a few leaves that I removed. I think at this point I'm going to check them again tomorrow, and water without any nutes. The only question I have should I use anything in the pH water, like hibrix?

I appreciate all the help.

 

[Nwgrower420]

I would use a flushing agent personally...