Problem with indoor rdwc leaves and growth.

[Technique]

i posted this in guide to sick plants but no reply

How long has this problem been going on? not all that long. week maybe.
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents) i'm growing in a mylar silver tent, apparently this one is ok
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...) 3 bucket recirculating dwc - blazeonup
What STRAIN are you growing? green house seeds white widow, clone
What is the age of your plants? 3 weeks
How long have they been in there mixture they are in now?(coco,soiless etc..) done two nutrient changes in the past two weeks (one yesterday)
How tall are the plants? just under 1ft
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? Vegetative
What Technique are you using? Techniques technique!!
What substrate/medium are you using?(Hydroton, RockWool etc.) 1inch wool with hydroton
What is the Water temperature? 64f,18c - 72f/22c
What color are your roots? White? Brown? Are your roots slimy? pale brownish/white. dont look too bad
What Nutrient's are you using?(If growing soiless) Canna classic(aqua) Vega, rhizonotonic
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful* 125ml of a and b, 80ml rhinzotonic res is about 45L

What is the TDS/EC/PPM you are using? 1.5ec and 711ppm
What is the pH of the "Tank"? 5.5
Are you sure your calibration is correct on your equiptment? yes
When was your last watering? currently always watering.. dwc..
What is your water temps? 64f,18c - 72f/22c

What size bulb are you using? 1000w digital balast
What is the distance to the canopy? 15cm (cool tube)
What is your RH Factor(Relative Humidity)? 20%
What is the canopy temperature? 86f 30c
What is the Day/Night Temp? (Include flucutaion range) 86f 30c- 60f 16c
What is the current Air Flow? (cfm etc.) not sure, but the inlet out flows the outlet
Tell us about your ventilation, intake exhaust and when its running and not running ? on 15m before lights on, off 15m later
Is the fan blowing directly at plants? airflows just skimming past them.


I can add i had a alge problem about one and a half weeks ago, buckets werent light proof, problems been fixed and no more alge forming, washed the system out and rinsed the roots in ph adjusted water for a little while..

ph was affected in this time as it was a bit green, ph was at about 4.5 in this time.. tho it could have been lower. (meters now calibrated after)

i've also done another flush yesterday. and changed to new nutrients with rhizotonic added, am waiting on another bottle of cannazym

thanks in advance.. possibly i am on the recover from this problem but thought i'd just post anyway.. also couldnt find a smilar photo in the thread... so i was a bit concerned

the effected leaves are going alot more brown. and dead.. so the problem is still on going..

 

[lysol]

leaf tips burnt and curled down = too strong on the solution
5.5 ph.. make sure you are letting it drift up to 6.3, how often are you PHing down?

 

[Technique]

it doesnt really drift, i'll put the ph down to 5.4 and try let it drift up for a few days. and see what happens.

i've toned it down to 1.4ec now, it didnt look like nute burn tho. as it wasnt browning from the all the tips and curling, just on a few selected large leaves... will grab some more photos today.\
Cheers

 

[Technique]

ok so the ec is about 1.3-1.4 so its not that strong anymore.

the ph i've adjusted down a little to hopefully 5.3-5.4

heres a few photos, the browning on the leaves started first. i think not long after the alge/not light proof

the yellowing is only recent..

 

[ChaosCatalunya]

Technique, I am no expert in problems, but I will say this...

What really matters is the new growth. If you had a problem before [pH out of range, even for a little time] the leaves 'from that time' may be damaged and will keep on 'suffering' ... they go downhill and there is no stopping them, leaves do not repair themselves, ever, they just die slowly, no matter what.

Look at the new growth, it seems to be recovering, so keep on as you are. Personally I would loose the Rhizotonic 'till all is well, most posters with problems have complicated matters with some potions and lotions, just plain old A+B works fantastically well.

 

[Technique]

rhizotonic has helped my root problems. broken down alot of the dead matter.

i've just bought a chiller also to fix a problem i can see in the future..

otherwise i may agree with you, as the new growth looks perfect.. tho may be yellowing a little..

will see how it plays for the rest of the week!

Cheers

 

[ChaosCatalunya]

Cannazym breaks down dead matter, Rhizo is a Root stimulator, they are totally different beasts....

 

[Technique]

one or the other, i use both. haha.



so my problem is ok? i shouldnt be worried? the rest of the plant looks nice, the new growth looks ok. may be a bit pale but it seems ok..

 

[Technique]

Seems to be getting a bit worse now??

i've pulled off most leaves from one plant to see if its going to be on going..

ph is 5.6 ec is 1.45 waters clean, roots are ok... a bit brown but not that worrying, both meters are calibrated properly and have been checked with a friends to compare..

water temps are between 18c 64f - 24c 75f (got a chiller on the way)

cannazym, rhizotonic, canna a + b are in.

dont want to have to flush and clean out the system again!!

 

[ChaosCatalunya]

one or the other, i use both. haha.



so my problem is ok? i shouldnt be worried? the rest of the plant looks nice, the new growth looks ok. may be a bit pale but it seems ok..

LOL, well... it is not a guessing game, you are asking people to help you ....

if the new is OK, carry on. I would ditch the Rhizo for now and use Zym 1x a week like it says on the tin. The yellowing leaves will carry on dying, look at the new growth.

 

[Technique]

yeah i gotchya

shall carry on and see. but its looking yellow.. will see in a few days.. i'll return

i just dont want top flush again. but i may have to. and bleach/wash it out good