Ro water with canna coco/nutes

[Browneyes1888]

Hi guys I'm a new member who has stumbled upon this forum
I'm from uk which is part of my issue in which I have 0.0 ec tap water
I've grown very successfully in soil but now want to try my hand at coco
I'm going to start reading the stickies now but as they so long I hope u don't mind me asking a few questions?
I'm using canna coco a&b with canna coco pro plus coir
I'm feeding 1.0ec daily till I get 30% runoff ph5.8
Runoff is 0.7-0.8 ec ph5.8-6.1
I seem to be getting deficiencies constantly yellowing and possible mg def
They 1 week into 12/12 at 30inches high and same wdth
Do any of u guys run canna coco with ro water
Do u have any tips to keep plants healthy
Thanks for any advice given

 

[GDK]

Yes you need to supplement calmag with tapwater that clean. I run canna ab with ro mixed with tap to reach .4 ec. Without the added calmag i get deficiencies too.

Congrats on having tapwater that clean tho.

Stay Safe

 

[Browneyes1888]

Here's a couple of pics for those who may have a idea wots going wrong
I will try to get another few

 

[Browneyes1888]

Yes you need to supplement calmag with tapwater that clean. I run canna ab with ro mixed with tap to reach .4 ec. Without the added calmag i get deficiencies too.

Congrats on having tapwater that clean tho.

Stay Safe

Lol I often think tap water this clean is a curse lol
Any brand of calmag do? And at every water/feed ?

 

[Browneyes1888]

Another couple of pics

 

[Browneyes1888]

Don't want to over load with pics but here's a couple more for good measure lol

 

[GDK]

Yes any brand will do. You could also try hitting them with a 1/4 tsp of epsom salt pr gal. A light foliar with epsom salt should green em up too. Just dont over do it.

Stay Safe