Yellowing/Burned Cuttings

[Chris1]

Hey just got these yesterday from a friend. The bigger fan leaves look like they are burned while the smaller new growth looks yellow. Any ideas? Running in dwc buckets, 8 gallon res

Strain is Island Sweet Skunk

pH is 5.8/5.9

PPM is 350

Thanks....


http://img822.invalid.com/img822/6140/1003890i.jpg


http://img600.invalid.com/img600/15/1003887.jpg

http://img96.invalid.com/img96/3828/1003889f.jpg

 

[justiceman]

Overall the plant still seems pretty healthy. I'd keep her at 350 for now and see how she grows from here on out.

What does your 350ppm consist of anyway? What are the temps of your water? do you use R/O or tap water? If you use R/O do you use a calcium supplement?

 

[Chris1]

Sorry...



Tap Water...


Using GH Grow/Flower/Hardwater Micro

Also Canna Rhizotonic

Temps are 74 room/70 res

They've been in the system for 2 days

 

[justiceman]

So is that 150 ppm worth of nutes consist of the Grow, micro, and bloom? Could be Iron or Sulfur, but they are still small so I'd wait and see what happens. They look pretty good though

 

[convex]

How well rooted were they?
What is your solution level - are they able to feed?

 

[Chris1]

Res level is about 1/2 inch below pots...they had a nice amount of roots, pretty long and bushy...and yes justice, 150 of grow flower micro

 

[justiceman]

Hmm your temps, nutes, and rez temps seem to be on point. You also said they have some pretty decent roots too. I say keep doing what your doing. And If I may I would suggest adding some fulvic acid in to your rez to get assisted nutrient assimilation. Diamond Nectar from GH should fit perfect with the rest of the GH nutes you have. I think it costs about 17 bucks a quart with a dilution of 5-10ml per gallon witch is pretty sweet.

 

[Chris1]

When would you suggest doing a res change/boosting the ppm?

 

[justiceman]

When would you suggest doing a res change/boosting the ppm?

Well res changes really depend on the nutritional requirements of the plant from what I understand. here's a quote from a web page about reservoir maintenance.

The general rule of thumb for reservoirs maintained by a float valve with fresh water cisterns, is to allow about half the volume of the nutrient solution in the system to be replaced by the cistern and float valve with fresh, pH adjusted water before draining the entire system and replacing nutrients. For example if you have 10 modules and each module holds a reserve of 2 gallons and the controller unit holds an additional 20 gallons, you will be maintaining a solution volume of 40 gallons. So, if you install a cistern with a capacity of 20 gallons you will know it is time to empty the system and start fresh, as the 20 gallon reserve of fresh water will have been depleted with the float valve maintaining a constant solution depth in the system. Alternatively, instead of topping up with fresh pH adjusted water, the cistern may contain 1/4X strength nutrient solution or a specialty stock solution. Avoid topping up the system with full strength nutrient solutions. Remember that the plants are theoretically consuming 99% water and only 1% fertilizer. You would slowly be increasing the solution concentration to dangerous levels, and the ionic imbalance will force the pH out of the desirable range.

So according to that I would do a res change once half of the reservoir volume has been topped up with ph adjusted water or 1/4-1/2 strength nutrients. When you do that res change I would probably up the ppm by 100-200 depending on how big the plants are by the time the res gets used up.

Even thought he statement says otherwise If you end up running a res for 3 weeks before changing it and the plants are big and hungry by that time then topping up with full or extra strength nutes wouldn't be a bad idea. Of course you could just res change at the time you want to increase the strength as well.

 

[ScuzyRoach]

Looks like normal yellowing a lot of cuts get after rooting for a long time. They use up all their N while rooting and it takes a few days after transplanting. If new growth looks similar you have a def. somewhere but i think once they take off things will be fine.

 

[Chris1]

Thanks guys, I'll keep you posted

 

[Chris1]

Follow up...

Here are the 2 ISS clones, still under flos, 5 days in bucket (I think)

Top of "Plant 1"

http://img543.invalid.com/img543/2289/1003896c.jpg

Top of "Plant 2"
http://img153.invalid.com/img153/1782/1003894s.jpg

http://img87.invalid.com/img87/8256/1003895t.jpg

http://img199.invalid.com/img199/8496/1003893py.jpg


Running Gh Flora/Veg/Bloom/Micro @ 5 ml/gallon and Floralicious plus @ .25 ml/gallon


I did my first res change yesterday and boosted the ppms up a little bit. My tap runs at 175, they are now up to 400
How they lookin?