I was about to get a 6 Stage RO unit but I just noticed that the 6th Stage puts Cal,Mag,Pot & Sod back in.
From research I'm better adding these back in myself with my nutrients right ?
STAGE 6: Re-mineralising filter to enrich the water ions with health essential minerals including: Calcium, Magnesium, Potassium and Sodium.
Any advice would be much appreciated, thanks.
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Either way is fine. Although, some growers are adamant that the plant uses trace amounts of sodium and adding more in could lead to problems.
Good question. I have a Berkey purification system that allows Calcium, Sodium, Potassium and Magnesium to remain in the water and have wondered that myself.