WTF!!!

[rastaman79]

Hi every one,
Dont know whats goin on this time round and its doin my nut in! So here goes........
plants are 3/4 weeks old from clone.Pre ph`d rockwool cubes
600wtt HPS-18/6.
NFT,and they`ve been in the system 11 or 12 days. The pump is just a light trickle running only when lights on.
Temps are 81 lights on,not too sure lights off temp,but its in family home....
125mm intake and exhaust rvk`s. On constant.Humidity 40%
On the second day of them being in the system I changed the res and put CANNA Aqua vega in at 280 PPM,everything seemed fine for a few days, just the usual bit of shock or so I thought.Then the smaller clone stared to look sick-drooping leaves,small brown spots then yellowing and dieing. Noticed green slime on the top of the cube,assuming it was just algae,I put a bit of card over it to block light.I then done a 48hr flush,just ph`d water. then I took the PPM up to 420 as I thought they may now be hungry...... And now it looks like this one is gonna peg it too. Emptied res today and now doing another flush,dont know else to do really??? So if someone could have an educated guess I`d be well happy,Thanks in advance,RM. Appologies for the bad pics.[attachment=o208912]

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rastaman79 Reviewed by rastaman79 on 11-18-2008. WTF!!! Hi every one, Dont know whats goin on this time round and its doin my nut in! So here goes........ plants are 3/4 weeks old from clone.Pre ph`d rockwool cubes 600wtt HPS-18/6. NFT,and they`ve been in the system 11 or 12 days. The pump is just a light trickle running only when lights on. Temps are 81 lights on,not too sure lights off temp,but its in family home.... 125mm intake and exhaust rvk`s. On constant.Humidity 40% On the second day of them being in the system I changed the res and Rating: 5

[rastaman79]

I forgot to mention,a bit of leaf curl is normal in this strain at this age so dont read too much into it. Anything else any body needs to know just ask,it will be met with a swift reply.

[stinkyattic]

Fill out the form. You have a pH problem from the looks of things but have given too little background.

NFT is supposed to run more than just while the llights are on btw. Your root zone should NEVER be allowed to dry out completely.

[VapedG13]

those plants are in shock

[rastaman79]

Fill out the form. You have a pH problem from the looks of things but have given too little background.

NFT is supposed to run more than just while the llights are on btw. Your root zone should NEVER be allowed to dry out completely.

Hi Stinky, I didnt think the roots would of dried out completely in just 6 hours dark, I didnt think they we`re supposed to be soaked 24/7,but your the boss. I tried to remember and cover everything that was on the form,but Im a wake n baker.Is there such a form that I can just answer the questions,as opposed to trying to remember the questions then write then down on a seperate page? Im not backwards in coming forwards,its just Im not great on pc`s.Thanks for the quick response by the way and ill give the form? another go.

[stinkyattic]

Dude. Don't get it twisted; I'm NOT the boss. Those are your plants. NFT needs to be really well aerated, either with stones int eh res or by a waterfall/cascading action somewhere in the system- surface turbulence adds oxygen- and the film should not be too deep either.

Here's the cut n paste of the form... just open up the thread and copy it. Or copy it from here. Or whatev.


E-indoor or outdoor
E-soil, soilless, coco, aero, or hydroponic
E-specific medium
CSL-Soil type/brand
HCL-Hydro/aero/soilless system type
SCL-Anything you have added to the soil
SCLR-Soil or slab runoff pH
E-Water source
E-Source water pH
HRT-Source water EC (if hydro)
E-Age of plant
E-Type of fertilizer
E-Rate of application (if hydro, this is your PPM number, preferably after each component is added)
E-Lighting source and distance from plant
E-Air temperature (both day and night if you are running a dark period)
HD-Reservoir temperature
E-Air % Relative humidity
E-Lighting schedule
E-Type of ventilation your room has
TR-Did you pre-soak your media in pH corrected solution?

Can you also post a pic showing the whole system as it sits in the room?

[rastaman79]

Damn Girl,thats fast!!!!! I musta just worked it out just as you posted! Thanks for keepin an eye out!

H=Answer if you grow hydro or aero
C=Answer if you grow coco
S=Answer if you grow traditional soil
L=Answer if you grow soilless other than coco (Promix, Hyponex, SunshineMix)
R=Answer if you grow in RockWool
T=Answer if you grow in HydroTon
D=Answer if you run any type of automatic drip system, including into soil or soilless
E= EVERYONE needs to answer lol!


E-indoor or outdoor INDOOR
E-soil, soilless, coco, aero, or hydroponic HYDRO/NFT
E-specific medium ROCKWOOL
CSL-Soil type/brand
HCL-Hydro/aero/soilless system type NFT
SCL-Anything you have added to the soil
SCLR-Soil or slab runoff pH
E-Water source TAP
E-Source water pH 6.9/7.1
HRT-Source water EC (if hydro) 140 or below-thats as low as my truncheon reads!
E-Age of plant 4/5 weeks since taken from the mother
E-Type of fertilizer CANNA AQUA
E-Rate of application (if hydro, this is your PPM number, preferably after each component is added) 1st dose-280ppm then 48hr flush then 420ppm there after(until this morn)
E-Lighting source and distance from plant 1220mm/4ft
E-Air temperature (both day and night if you are running a dark period) 81 lights on,unsure lights off
HD-Reservoir temperature Unknown
E-Air % Relative humidity 40%
E-Lighting schedule 18/6
E-Type of ventilation your room has 125mm intake and exhaust RVK`s
TR-Did you pre-soak your media in pH corrected solution? Yes.

[rastaman79]

once again,I missed something out,I am running an 6 inch long airstone in my res and suplementing with co2 tablets and liquid oxygen rotating each every 3 days

[stinkyattic]

I have discovered your problem.
You are putting CO2 tablets in your reservoir? Noooooes!!! Carbonic acid FAIL!
Quick quick go check adn adjust your res pH to 5.8 if it isn't there, stop with the CO2 tabs, and also post up the value of the runoff pH coming off your slab before it goes back into the res. Those two numbers- res and runoff- are going to combine to tell you what's up and WHERE the source of the problem is physically located.

[rastaman79]

Just go do that now! But know this Stinky those tabs are supposed to go in the tank at a quarter a tab every 3 days and they are specific tabs for hydro res` and it says on the pack-that overdose s neither harmful or benificial. BRB!