multiple problems aaaaaaaaaaaah help

[Ausie downunder]

these two seeds were sprouted 4 weeks ago small one wilted and nearly died but has now stabilized the larger one has that yellow edge on the larger fan leaves
they are run on 2 part canna veg,constant feed into rockwool sitting on expanded clay in dutch pots with a 50 liter resivoir, under a 600 watt conversion bulb (horizontal hallide run in a hps set up) nutes ec 1.4
ph 5.5 to 6.2 i did folar spray with a 2% epson salt solution in week 3








This is a box of 40 clones from 8 different mothers they have a similar distinctive yellowing round the leaf edges




these two top 44 were grown from seed and are both 3 weeks old what is the burnt tips from the smaller one is sick


top 44 clone yellow tips and curling up has been sprayed with nitrozyme at the rate of 1 ml per liter. are these top 44 a fussy plant ?




These two pictures of a sick mother but the clone in the front was not affected??????




these are getting light coloured and seen to be exhibiting the same light yellow clour round the fan leaf edges???????????

i have grown for a while but these are all new seeds some local (sativa crosses) and some from gypsy's top 44 sadhu the aurora indica did not germinate at all
Would appreciate any suggestions

 

[Blackmelo]

most likely a magnesium deficiency man. you need to add magnesium to your nutrients. Epsom salts are the easiest and cheapest way of getting some mg.
Any big pharmacy sells it.

Could possibly be a zink deficiency but I really think it will most likely be magnesium more than anything else.

 

[Ausie downunder]

i have sprayed with a 2% solution of epson salts in week 3
you can see the residual salt on some leaves.
this is what puzzles me

 

[Blackmelo]

hey aussie, you need to be adding 1 teaspoon per gallon of nutrient water that you feed.
2% sprayed on the leaves sounds like a really bad idea.

Since you have discovered that your nute is most likely missing some mg, I would add some every watering. half a teaspoon per gallon is a good amount to start with. MJ plants can generally handle up to 3 teaspoons per gallon.

 

[Ausie downunder]

blackmelo Hi the clones seem to like the spray at 4 weeks when they are under fluros
mothers are in dutch pots g/w cube in expanded clay fed continuously by 4 mm hose under a 600 watt coversion bulb 50 liter resivoir with a float valve to top up water
i dump the resivoir weekly and use canna aqua veg A and B and cannazyme ph down and thats it
so 50 liters is 11.1 imp gals or 13.5 us gals i think???
5 grams per teaspoon would equal 55 grams or 67.5 grams per resivoir

 

[Blackmelo]

blackmelo
5 grams per teaspoon would equal 55 grams or 67.5 grams per resivoir

Yep. That is what I would add for now and monitor.

 

[Ausie downunder]

thanks i'll try it

 

[MynameStitch]

Hey aussie that 2nd picture tyou took can you retake that and make it a bit more clearer?

also are they still hjaveing the pale look to them> can you take a few more pictures?

 

[Ausie downunder]

MynameStitch
Hey aussie that 2nd picture tyou took can you retake that and make it a bit more clearer?
also are they still hjaveing the pale look to them> can you take a few more pictures?

the top 44 clone at 5 days


same top44 clone at 12 days no roots yet ( very slow)


sadhu with yellowing round edges of leaves


same two plants a week later


top 44 from seed


same plant a week later
only one out of the four is worth even flowering
that in my opinion would be the sadhu