Pictures included, Whats the problem here?

[NorCalFor20]

HYDROPONICS:

What STRAIN are you growing? Headband , and Purp Urkle

What was the establishing technique? Clone

What is the age of your plants? 5-6 days in flower

What substrate/medium are you using?Rockwool cubes in hydroton 2 gal buckets

What is the Nutrient temperature? 68-72 deg

What Nutrient's are you using? GH flora lucas formula

What is the TDS/EC/PPM you are using? EC 1.5

What is the pH of the "Tank"? 5.8-6.0

Are you sure your calibration is correct on your equiptment? yep

When was your last watering? 3 times a day 15 min floods during lights on

When was your last feeding change? a week ago?

What size bulb are you using? 2 1k hps +400cmh

What is the distance to the canopy? a foot, no heat outside glass anyway aircooled

What is your RH Factor? ????? dont know ???? 30-40 % ???

What is the canopy temperature? 72

What is the Day/Night Temp? 60's at night-72during "day"

What is the current Air Flow? 847 cfm


click on the pix to view larger, make sure to look at all pix for differnet lighting


(from left to right) pic #1 shows outer leaf browning pic #2 shows leaf droopage and curling also note purple stems. pic #3 is the same as pic 2 with different lighting pic #4 is another angle, also differnt lighting to show from another prospective pic #5 is a shot from above you can see the purple stems, the outer leaf browning

so let me know what you think

 

[mexilandrace]

my first instinct said ph related

 

[NorCalFor20]

well, its not PH ph ranges betwee, 5.8 and 6

 

[Nughit]

I noticed youre growing in hydroton. Is it fresh or re-used? I had a problem with nute lockout on some re-used hydroton. My plants were starting tolook like yours. I flushed the shit of the plants with clearx and continued with normal feedings afterwards. It fixed everything up.

 

[lysol]

When I give my plants too much ferts they start to look like that ( leafs curl down ), if it gets extreme I start to get rams horn on new growth followed by lockout. Not sure if this is the problem but have you upped ec in the last few weeks?

 

[relief]

Looks to be symptoms of root rot. Have the plants been fading from green to light green and getting lighter?

Is it hydroton only, or did you start the clones in rockwool? Never mind, just re-read you post. Is there any way you can set the flood level UNDER your rockwool? Have the roots grown down far enough to do so? Sounds and looks exactly like root rot to me. Root rot attacks the "feeder roots" that supply micro-nutrients such as iron, mag, calcium and so on which will give plants a faded look over the entire plant and cause them to "droop".

I know, I've had this problem growing in hydroton with rockwool. Flood the hydroton not the rockwool if the roots have grown down far enough and the plants should regain their color and perk up.

 

[NorCalFor20]

no root rot, roots are clean and white, hydroton is new, fert levels are 800ppm which is relativly low..... Ill flush this res , add some clearex , 35% h2ho2 and , hygrozyme let that cycle 2 x and flush again re add nutes and continue flowering i guess.

only thing i think could be was that is could be related to flood amounts, i flood 3 times only when lights are on could the plants only want 2 floods or maybe i shoudl flood 4 times while lights on then 2 more times lights off im not sure how many times i should flood... ebb n grow buckets

 

[relief]

I understand, but the roots in the rockwool could be rotting (that was my case).

 

[RC_Colas]

I would second the root rot idea, as this can be common inside the rockwool. If not then my second thought would be nutirient lock which can happen if you use hard water...both happended to me many years ago. Your girls looks like they are not receiving their food;(

Good luck.

RC_Colas

 

[NorCalFor20]

hmm no real way to check if the roots in the rockwool are ok... but if they anythign like roots in the bottom of the pot they look healthy

 

[Ipsissimus]

do the ppms drift up? ph drift down or what? what ppm & ph is your tap? what do you use for ph down?

When was your last watering? 3 times a day 15 min floods during lights on

I think it is unusual to not water at night at all, no? A common cycle seems to be more like 15 mins every 3-6 hours, 24/7.

Might be a good idea to put an airstone in your reservoir for good measure. A little h202 wouldn't hurt.

 

[NorCalFor20]

Im starting to think its PH i know hydro should be fine between 5.9 and 6.0 but i am getting reccomnendations to raise to 6.5 becuase i might have alkialine leaning plants