Clone leaves going a bit yellow and curling (pics included)

[Dandy]

Here are some pics of my aeroponic clones, the two on the back have been in there for twice as long and have good roots as shown below.

 

The new clones are yellowing in the middle of the leaves though, is this a ph problem? Tips burnt initially due to too high nutes (1.8, brought now to 1.6 now).

[Hotbox]

Hey man i don't know much about clones but most the stuff i've read and seen about them they seem to get a bit of yellow. The guy in this video thinks it is best to cut the yellow bits off: http://www.youtube.com/watch?v=-iimHkskETg.

[Al B. Fuct]

Leaf yellowing is usually caused by rootzone conditions being too wet. Check for stem tip rot. Tips must not be in the water. Treat your solution with 50% grade H2O2 @ 1ml/L every 3-4 days. No nutes in the solution. Plants can't use nutes until they have roots. Edited November 3, 2009 by Al B. Fuct

[biggerbuds]

dandy mate if you are talking 1.6 EC that is way over the top for them size plants.

 

they look way overfeed to my eyes,i would recommend dropping that ec right down to about 0.5 - 0.8 , even these EC levels maybe a bit strong for them size plants

 

whats your background EC ? the EC of your tap water to start with ?

[gitm69]

Hi,

 

The 2 main reasons for yellowing leaves in clones are:

 

1. To much light - Clones and seeds need aroud 4000 lumens to support life, Veg 27000 lumans and flowring 107000 lumans

2. The cutting was taken from a weak or nutrient deficient plant

 

It is always good to load the mother plant with more N and K 3-4 days and extra water and sugers 2 days before before clonning.

 

Either way the EC Guide for nutrient strength should be

 

Clones - 0.45-0.95

Veg - 0.95-1.2

Flower - 1.4 - 2

 

Yours seem to be high for clones thats the main reason way they look unhealthy.

 

Cheers

[gitm69]

Hi,

 

The 2 main reasons for yellowing leaves in clones are:

 

1. To much light - Clones and seeds need aroud 4000 lumens to support life, Veg 27000 lumans and flowring 107000 lumans

2. The cutting was taken from a weak or nutrient deficient plant

 

It is always good to load the mother plant with more N and K 3-4 days and extra water and sugers 2 days before clonning.

 

Either way the EC Guide for nutrient strength should be

 

Clones - 0.45-0.95

Veg - 0.95-1.2

Flower - 1.4 - 2.0

 

Yours seem to be high for clones thats the main reason why they look unhealthy.

 

Cheers