Phosphorus Deficiency? Pictures & Questionnaire Complete

[Tokis Pokis]

SOIL:

How long has this problem been going on? About 2 weeks
What STRAIN are you growing? Chemdawg D (Clone)
What was the establishing technique? (seed or clone?) clone
What is the age of your plants? 4 weeks total
How long have they been in the soil mixture they are in now? 3 weeks
How Tall are the plants? 4"-6"
What PHASE (seedling, vegetative or flower) are the plants in? Veg
What Technique are you using? (SOG, SCROG etc)
What size pots are you using? Currently 1 plant per 16 oz. cup
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) FFOF + 30% Perlite
What Nutrient's are you using? Fox Farm Big Bloom, Grow Big, Tiger Bloom, Cal-Mag Plus, Grow More Seaweed Extract.
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful* 30 ml Big Bloom per gallon. 1 ml Grow Big for first feeding
How often are you feeding? Every other watering.
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect) Micro 1st, Veg 2nd, Cal-Mag 3rd
What is the TDS/EC/PPM of your nutrients used? 400-450 ppm
What is the pH of the "RUN-OFF"? Not sure
What method of pH test was administered? Using Strips? pH pen? Drops
How often are you watering? About once a week.
When was your last feeding and how often are you feeding? Yesterday and feed everyother watering
What size bulb are you using? About 50 watts of CFL currently
What is the distance to the canopy? 2-3 inches
What is your RH Factor? (Relative Humidity) 30-50%
What is the canopy temperature? 75-80
What is the Day/Night Temp? (Include fluctuation range) Day = 80 / Night = 70
What is the current Air Flow? (cfm etc.) Not sure
Tell us about your ventilation, intake exhaust and when its running and not running ? Passive intake and exhaust with 1 oscillating fan
Is the fan blowing directly at plants? Yes
Is the grow substrate constantly wet or moist? No
Is your water HARD or SOFT? Not hard, not sure if soft
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? RO
Are you using water from a water softener? No
Has plant been recently pruned, cloned or pinched? Made clones about 5 weeks ago
Have any pest chemicals been used? If so what and when? Fungicide3 about 1 week ago
Are plant's infected with pest's? No

So there you have it. My CDD cuts started showing symptoms of phosphorus deficiency shortly after transplanting into 16 oz. cups. I gave them a light does of seaweed extract at transplant and nothing but H2O until yesterday when I feed a full dose of Big Bloom and light dose of Tiger Bloom. My money is on P deficiency but would like to confirm before proceeding. I've included a few pictures and would appreciate any help. Thanks.

 

[BL4ZE20]

Your using way to many nutrients especially on a clone that small. Your clones would be fine with just fox farm soil and plain water. Your ph is probably off which is causing your plant not to be able to uptake the nutrients it needs. Your also using bloom ferts while your still in veg there's no need for that. You need to just use plain water for now and flush them out a bit. Also when you give them plain water make sure the ph is right and also test the run off from the bottom of the pots and make sure it's still in the correct ph range after it runs through your soil.
Hope this helps

 

[Tokis Pokis]

I appreciate the reply.

Maybe I should have been a bit more clear. I listed all of the nutrients I have. Not what I have fed these plants.

These plants have been fed mostly plain water. The only nutrients I added before these symptoms showed up is the seaweed extract. Nothing but H2O until yesterday when I gave them a light shot of Tiger Bloom with the hopes of correcting what appeared to me as a P deficiency.

I'll wait one more day. If they get worse, I'll flush per your advice.

 

[Herbsman_OS]

I appreciate the reply.

Maybe I should have been a bit more clear. I listed all of the nutrients I have. Not what I have fed these plants.

These plants have been fed mostly plain water. The only nutrients I added before these symptoms showed up is the seaweed extract. Nothing but H2O until yesterday when I gave them a light shot of Tiger Bloom with the hopes of correcting what appeared to me as a P deficiency.

I'll wait one more day. If they get worse, I'll flush per your advice.

A little dose of SuperThrive might help as well. Make a gallon mixture and then pour some half way in a cup and dilute it with water before you feed them again. I do that with my clones when I can't transplant them soon enough.

Herbsman_OS

 

[BL4ZE20]

Alright well I'm guessing you must still have a Ph problem and nutrients are getting locked out. Just make sure to ph your water and then once you water get some of the run off to test it and make sure it's still in the correct range.
How long have the clones been in those cups of fox farms?
That's all I would think it could be but i'd wait for someone else to respond and see if they have another idea/solution.

 

[Tokis Pokis]

Thanks guys. I appreciate the help. Will keep you posted.

Herbsman_OS, Good idea. Funny you mention Super Thrive. I haven't used the stuff yet, however the past few times to the nursery section I've taken a hard look at it. Just haven't pulled the trigger since everything has been rather smooth so far.

BL4ZE20, They have been in the cups of FFOF since May 10th. Gave them a light dose of Seaweed Extract on the 10th and nothing but RO water until a couple days ago. pH is 6.5 - 6.8. I'll get a reading of the runoff next watering.