weird spots please help!

hey guys my babies are 2 and a half weeks old from seed and this morning one of them came up with these weird spots.. (see pics) and another one of them looks a little bit papery what could that be also. any help would be much appreciated

gear:
canna coco soil
growrite nut
600w hps
ph is about 6.5 - 6.7 and the last time i checked the runoff it was about 6.0 - 5.5 if i remember correctly and i havent given them any ferts yet ether
thanks

can someone please tell me whats wrong with my plants?

could be a Mag def....or possibly over watering maybe.

true i water it every 3 to 4 days or when the soil in the bottom of the pot is dry. so i dont think im over watering.
so i guess it might be a mag def should i just get some ferts with mag in it??

cal mag is awesome but you could use some epsom salt too....with coco I dont know the watering regiment.

im not a wizz but i think its nut-burn, its to early for it. it has enouf food already

PH should be around the mid 5's I believe with that medium. I'd foliar feed some cal-Mag. 6.4 ph and below locks roots from getting Ca or Mg.

4myself said:

im not a wizz but i think its nut-burn, its to early for it. it has enouf food already

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It's not nute burn and that medium has no food in it, how are you stating it has enough already? He's never feed them. I'd say it's high time.

Serapis said:

PH should be around the mid 5's I believe with that medium. I'd foliar feed some cal-Mag. 6.4 ph and below locks roots from getting Ca or Mg.

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ok so what should my ph be at first when i water and what should the runoff be. and im not familiar with foliar feeding how do i give it cal-mag?

sake69 said:

ok so what should my ph be at first when i water and what should the runoff be. and im not familiar with foliar feeding how do i give it cal-mag?

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Foliar feeding is done by spraying the underside of leaves with a weak nute mix. It is a way of bypassing roots. For a cal mag deficiency, I would mix one quart of PH 7.0 water 1/2 tsp cal-mag, 1/4 cap of SuperThrive and for all around feeding, add 7 drops of Peters Plant Food 10-15-10. Mix up real well and use a plant sprayer that atomizes the spray, something like in the picture.



When you spray under the leaves, the nutrients are taken in by the leaves and the results are fast. You still want to resolve the PH issue that may be locking nutes out as you do this. I'm not a coco grower but I know the medium has a low PH. I think that PH will cause you issues. Maybe someone that has used it can educate us both.

i cant find any peters plant food or any superthrive here in aus is there a alternative i can use. and where could i get the cal-mag? my local hydro shop?