RO Water on Outdoors Grow

[SHiNi]

Hey guys so I work at a Chemical manufacturing company and found out that they use borehole Water with a RO plant.Now my question I currently use rain water when available or dechlorinated Water if rain water is not available.Will I need to supplement with cal mag if I start to use the RO water? If yes will I have to do it with every watering or every second etc...I checked with the lab the ph is 7.0 always.And is there other things I should know when using RO water?
TiA

 

[Imzzaudae]

So what kind of outdoor grow are you doing. In the ground or in pots, what potting medium.
Commercial fertilizers like 15- 5 -5 or Organic as in JLF or teas.

 

[SHiNi]

I'm growing in 20l pots using amended organic living soil.With biobizz range of organic nutes Fish Mix,Grow and Bloom and unsulpherd blackstrap molasses.

 

[SHiNi]

Since the RO water is free at work and people normally pay for it I thought I would give it a try never used it before.

 

[Imzzaudae]

Hi again. I also grow outdoor in living soil. Keep in mind that the R.O water has nothing in it.
I am a firm believer in a little Cal- Mag start to finish. 2 or 3 ml = 1/2 tsp in a 5 gallon bucket of water once a week and my plants are happy. Don't over do it.

You may enjoy these videos. https://www.thcfarmer.com/threads/growing-organic-buy-nate-growing-like-a-viking.147687/

 

[SHiNi]

Thanks for the info bro appreciate it will give it a read and a watch.Will use your dosage and adjust accordingly in flower since they need more during flower maybe 1tsp in flower.

 

[Imzzaudae]

Thanks for the info bro appreciate it will give it a read and a watch.Will use your dosage and adjust accordingly in flower since they need more during flower maybe 1tsp in flower.

sounds about right. Hope you enjoy the videos.

 

[SchwiftyGrower]

Hey bro, I use RO, and EVERY water besides the last 2 weeks of flower I will use calmag, whether it’s a full nutrient feeding or just a water feeding, I introduce calmag. Cheers!

 

[SHiNi]

Thanks bro appreciate it and what is your recommended dosage ?

 

[SchwiftyGrower]

I use FF and following their feeding schedule starting at half dose for the first 2 weeks.

 

[SHiNi]

Awesome stuff thanks bro