Help me diagnose my newly sick plants :(

[Dandy]

Yesterday the leaves of one of my plants starting turning yellow and another plant started to get spots.

 

These are on the bottom original leaves.

 

Here are some pics:

 

Plant one with yellow:

http://img19.imageshack.us/img19/4850/yellow1p.th.jpg

 

http://img15.imageshack.us/img15/7006/yellow2n.th.jpg

 

Plant two with spots:

http://img12.imageshack.us/img12/2356/spots1.th.jpg

 

http://img22.imageshack.us/img22/3720/spots2s.th.jpg

 

Please help me diagnose and treat my babys, i really dont want to lose them!

 

// Been feeding them about 20-30ml of water a day with full strength nutes (5ml per litre of water -'Hydrogrow - Growth')

[wilderbud]

Looks pretty normal to me - the yellowing is the plant feeding from the seedling leaves - they should pull through if you dont baby them. Id give them a good watering with ph 6.5 1/8 strength grow formula and make sure the rockwool dries out before doing it again. Worry about the roots more at this stage. Edited March 29, 2009 by wilderbud

[Dandy]

Looks pretty normal to me - the yellowing is the plant feeding from the seedling leaves - they should pull through if you dont baby them. Id give them a good watering with ph 6.5 1/8 strength grow formula and make sure the rockwool dries out before doing it again. Worry about the roots more at this stage.

 

 

Cheers BHP said something similar over chat saying basically its normal for the first bottom leaves to fall off, guess im just over mothering the plants and stressing .

 

Have done one water with no nutes for a bit of a clean and have taken down their nute strength from 5ml a litre to 2.5ml a litre for the next few days.

[loylty gets u nothing]

struth

5ml a litre

them lil 1s are burnt mate

do u have a truncheon or ppm meter?

generally i keep it to like 1ml per litre

till they get 4 leafs then begin increasing

all the best

bil

[Gazza2001au]

. i agree with bill the nutrient is way to strong for seedlings of that size! go 1/4th or 1/3rd nutrient strength def ditch the full strength nutes