Possible cal or mag issue?

Hey people.

I have just started my first coco grow and there and there are small signs something is not right and I would appreciate the input of experienced coco growers.

I have small marks on a plant and some of the leaves are twisting and others have a purple look got the inside of the leaf.

I have got coco which was in brick form and I buffered it and rinsed it with phed water and the. Watered it with water with a strong dose of cal mag.

I gave a watering yesterday of ph 5.8 and had a light dose of canna coco and rhizoforce.

Does anyone think this is an issue for me to concern myself with have I caused a lock out or something?

I was thinking of either foliar feeding cal mag or giving a feed of RO water with calmag and light cana coco A+B.

Any input is appreciated.

The coco looks dry. You should be feeding daily to run off and never use plain water.

I watered last night about 200ml of water and got a healthy run off. Should I do more frequent if its looking dry?

I'll water now with some cal mag and light nutes.

Feed daily to substantial run off with calmag and nutes.
I start in the 1 liter airpots as well and I start feeding daily from around day 3 from sprout.
These are 10 days from sprout and fed daily.

How much ml do you water them to keep them wet until the next day?

Also what ppm are you giving? It would help alot as I'm hearing all sorts.

Would it be an issue to water twice a day if they are dry from a heavy watering less than 24 hours ago?

Thanks for the input and happy your girls are looking nice and healthy!

I don't measure the amount that I feed.........I just pour until it comes out the bottom.
I start with a ppm around 300 and increase to around 600 or so......and that's using tap water.
You can feed twice a day if you like but it would be unnecessary at this point, considering the size of the plants and the pot size........they won't dry out in 24 hours.