plant deficiency , please help

[bayatu]

hi , im in rockwool my plants are 1 month old and they have 2-3 sets of true leaves
i noticed what i think it is a iron/cal/mag deficiency so i bought some epsom salts and calcium carbonate
i have a foliar spray to which i added 30 ml dutch master liquid light +30 ml penetrator + 1tsp epsom salt +1tsp calcium carbonate , i spray every 2 days
on the dutch master site it says the ph of the foliar spray will be at a ph of 8-9
if i added epsom salts and calcium carbonate should i check ph of the foliar spray
for root feeding i added 1 ml Grow A + 1 ml Grow B +1 tsp epsom salts + 0.5 ml Zone + 1ml Max Grow + 0.5 ml Silica and how much calcium carbonate should i add?
http://imgur.com/U0JNZYH
picture of my plants
i just flushed yesterday and they getting a bit better . i see a bit of green in the middle of the affected plants

 

[Mikell]

Oi, not EC, but tsp and ml per unknown measurement? gallon? US/Imperial? Litre?

The first thing that strikes me is using more epsom salt than base feed. Aim for 25-40ppm Mg, if needed. Overthinking kills a lot of plants.

Carbonates should be kept under 100ppm. Obviously initial water quality must be taken into account.

I'm not up on hydro, but those plants are young and typically just need a balanced base nutrient. A good base shouldn't need supplements right out of the gate.

 

[bayatu]

i feed twice a day i use RO water and the feeding of the nutes are per litre of water , water ph is around 6 - 6.5 , 1tsp of epsom salts per litre of water

 

[bayatu]

thanks for the help btw

 

[azad]

Lower your pH in rockwool at 5.5-5.8

 

[Mystic Funk]

that looks like nute lock out or a massive iron deficiency???
read the back of the Epsom salt and see if it even has iron in it...
like the other person said lower your PH to 5.8 to 6.3... max.
don't give them so much Epsom
cut out all supplements and just feed base nutrients and micro nutrients. looks like your over doing it a little....


good luck
-mystic

 

[Budley Doright]

that looks like nute lock out or a massive iron deficiency???
read the back of the Epsom salt and see if it even has iron in it...
like the other person said lower your PH to 5.8 to 6.3... max.
don't give them so much Epsom
cut out all supplements and just feed base nutrients and micro nutrients. looks like your over doing it a little....


good luck
-mystic

To me....it almost looks like iron...

Iron is a manufacturing defect.....when the plants runs out of iron.... it finished by creating chlorotic leaves...

WIth iron I expect to see green tips and yellow interior....this is the opposite....

 

[Mystic Funk]

cal and mag yellow at the bottom to middle of the plant and iron at the top.. it's iron or one of the other things I said..

 

[corky1968]

Add some a rusty nails to your watering can and you'll never have iron deficiencies again.

 

[Mystic Funk]

Add some a rusty nails to your watering can and you'll never have iron deficiencies again.

that's true.
but don't add oxygen to that water or it will lock it up..