cal mag deficiency??

[Saiksonas]

Hi, that's my 1st grow in coco, got 5 autoflowering "+speed" and one "cheese". Girls are 16days old now, I think they are doing well but not sure.. they are under 400hps and I'm using canna nutes.Was feeding them with 1.3ec using RO water. Leaves are getting a bit lighter colour, so gave them plant magic cal mag. Is it cal mag deficiency? Some leaves got little spots aswell.. dont want to run into a big problems, let me know what you think. Here are some pictures

 

[aridbud]

Hi, that's my 1st grow in coco, got 5 autoflowering "+speed" and one "cheese". Girls are 16days old now, I think they are doing well but not sure.. they are under 400hps and I'm using canna nutes.Was feeding them with 1.3ec using RO water. Leaves are getting a bit lighter colour, so gave them plant magic cal mag. Is it cal mag deficiency? Some leaves got little spots aswell.. dont want to run into a big problems, let me know what you think. Here are some pictures

You're already seeing a big problem looming. Take it to Infirmary section or coco coir growers.

Another reason preference is organic soil....no fuss, no muss.

To each their own. Hope it can be remedied soon.