Yellowing and Drooping...But only on one plant?

[Kronikal_kiwi]

Alright people I've got a single plant out of the 6 in my hydri rig thats giving me a headache. The other plants were put in approximately 4 days prior to this one affy and they were in "shock" for a couple of days but quickly came right. There were 4 Romulan and another Affy. Then I put this affy in and it's leaves drooped, they started yellowing (biggest ones first) and it's never come right. All the other plants are cranking, including the other affy but this one is an unhappy girl. I checked and shes definately got roots taking off. I moved some clayballs around and had a look and yeah...definately some major rooting going down! But the plant just looks sicker and sicker each day. I've included pics and I've cut and copied stitches list of questions.

How long has this problem been going on? Ever since the plant was transplanted into the hydro rig. The other plants (which had been transplanted a few days earlier) stunted for a few days and came right but not this one.

Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents) Yes, but again it only affects the one plant.

What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...) Recirculating satelite. (Pretty basic)

What STRAIN are you growing? Romulan and Affy (one of the affies is the one with the problem)

What was the establishing technique? (Were the seed or clone?) Clone

What is the age of your plants? Approximately a month (but they've been kept under a small fluro to keep them alive but barely growing for two of those weeks)

How long have they been in there mixture they are in now?(coco,soiless etc..) The Bad plant was transplanted around a week ago

How tall are the plants? The bad one is around 10"

What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? Vegetative

What Technique are you using? LST but not un the unhealthy plant

What substrate/medium are you using?(Hydroton, RockWool etc.) Hydroton

What is the Water temperature? 20 degrees celcius

What color are your roots? White? Brown? Are your roots slimy? Dont know sorry

What Nutrient's are you using?(If growing soiless) Canna Vega A+B and Rhizo

How much of each nutrient are you using with how much water?
I run a 20 liter res, I add 2 mils per liter of A+B to get an EC of 1.0 above tap water (1.1 in total) and then I add 4 mils per liter of Rhizo

How often are you feeding? (If using soiless) Every 3 hours

How often are you giving nutrients? (If using soiless) Every time

If flowering, when did you switch over to using Bloom nutrients?

What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect) A+B and then Rhizo

What is the TDS/EC/PPM you are using EC=1.1

What is the pH of the "Tank"? 5.5 and I let it slide to 6.1 before adding PH down again

How often are you testing your pH/PPM/EC/TDS? Every day

Are you sure your calibration is correct on your equipment? Definately! Its a bluelab combo meter and I calibrate once a week but its never off!

When was your last watering? 10pm tonight

What is your water temps? 20 degrees celcius

When was your last feeding change? (ie. grow-bloom-micro-additional) 5 days ago.

How often do you clean your system: example: Flush out water replace with clean water and nutrients? Weekly

What size bulb are you using? 2X400Watt HPS

How old is the bulbs you are using? 6 Months

What is the distance to the canopy? 30-50 CM's depending on plant but the unhealthy plant is around 45CM's

What is your RH Factor(Relative Humidity)? 57%

What is the canopy temperature? Ranges from 24.9 celcius to 29.4 celcius

What is the Day/Night Temp? (Include flucutaion range) Night time gets as low as 22 celcius

What is the current Air Flow? (cfm etc.) A grunty 150 centrifugal, unsure of cfm but its very strong! Another 150 on a closed circuit for the cooltubes

Tell us about your ventilation, intake exhaust and when its running and not running ? 150 exhaust runs constantly, also I have the bedroom window open so lots of fresh air in there. The other 150 only runs when the lights are on cause it's for the cooltubes.

Is the fan blowing directly at plants? The oscillating fan is but the unhealthy plant doesnt cop the worst of it and the other plants dont seem damaged.
Is your water HARD or SOFT? Soft...Ec0.1

What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap

If using tap water, what is the ppm/EC/TDS of the water right out of the tap? 0.1

If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?

Are you using water from a water softener? No

Has plant been recently pruned, cloned off of or pinched No

Have any pest chemicals been used? If so, What and When? No

Are plant's infected with pest's No

 

[Scrogerman]

Thats got me scratching my head man!

You just top feeding by hand are you or is it drip? & is that a puck i see in the hydroton there?

 

[¿kama3]

maybe too much watering

 

[Scrogerman]

i was thinking not enough(ie- dry spots/patches in the bucket after irrigating?!!), they are rather large pots/buckets but its got me perplexed!

Is that brand new hydroton your using there, or have you used it before? How did you treat the hydroton before use?

 

[Scrogerman]

Ive looked at your other grows & i can see you know your shit bro, really like your Rig & your hanging drying baskets/nets! Wicked man!

thats a recirculating drip system(with the drip ring) bro yeah?! if your doing it the same way. V-Nice indeed!
A Mg foliar(epsom) wouldnt hurt man. but other than that i have no answer, could be that simple, ive studied that pic & i think i can see a little Mg def maybe an N problem too but juding buy what youve been feeding EC&PH seem fine, Canna & Rhizo, good stuff!
I'll call back. Good Luck!

1/2(half) teaspoon per litre Epsom with a spreader/wetter, would only help imo. (i got a bald patch now)
alternate foliar with rhizo/epsom i would.(dont foliar under HID & dry fast=5 mins)

hope you get to the bottom of it!

 

[Scrogerman]

Could be a RootRot outbreak like Pythium. Read this mate!

http://strainguide.org/wp-content/uploads/Tutorials/PlantTrouble/1289.htm

If thats the case lose the Rhizo & add H2o2(+nutes only) or another treatment. Its worth doing anyway by the looks of her!(dont forget to isolate her if you think it could be rot)

could well be rot if your using organic based pucks, i rec rockwool instead in future, leave the organics to organic gardening.

Good Luck!

 

[Kronikal_kiwi]

Hey guys.

Thankyou for all the help! Much appreciated.
Im a litle confused as this plant has identical conditions to all the others (i.e. watering etc) so I doubt if it is under/over watering. The rootrot is definately a possibility. I will treat with h202 tomorrow when I change the res. Thankyou!

The only other thing I'm starting to consider is that this pot (and only this pot) got new hydroton whereas the others all had recycled stuff from me last run. Possibly it wasnt rinsed thoroughly? Would it make the plant look like this? I did rinse heavily but I've never quite managed to get all the red dust out before no matter how much I rinse!

Also there is a VERY good chance that dry/overly wet patches are occurring in the balls as that particular plant doesnt have a whole circular dribble rig as I didnt have many bit lying around so I just put a 4 mil T on the end of the feed line.

Scroger, I wouldnt call it a "drip rig" more of a dribble rig. I just run a 4 mil line in a circle for each plant that has 2 4 mils Tees coming off. Probably not ideal but it works.

Thankyou everyone for your help once more!

 

[Kronikal_kiwi]

Hey there everyone.

Tonight I submerged my bucket in water so I could gently ease the plant out. I wanted to make one hundred percent sure there was no root rot otherwise I'd have to act fast before it spread.

there wasn't! Yay

But this brings me back to my initial problem. This is the only plant in the whole system doing this! I'm currently rinsing the clay balls out thoroughly and I really hope that's the issue. Having said that when I pulled the bucket from the water no red water dribbled out it was all clear.

Any ideas?

Cheers guys!