Originally Posted by kekon
But they also wrote:
If i get it correctly, if one mixes tap water of GH 15-20 with RO water in 4 to 1 ration then one obtains GH of 3..4. So it is unclear... 6..8 or 3..4 ?
I expected you notice this.
And I'm also a bit confused about it.
But why they advise starting with 6-8? Maybe they're afraid of too soft water also.
Either way, this surprises and also satisfies me in someway, I thought it was lower than this.
Now it's not incredibly low anymore.
BTW, I've just found the reliable source of info saying Brighty K is made from Potassium Carbonate.
May be they use that to counteract Aqua Soil. http://www.adana.co.kr/product2.asp?seq=21
(please use Google translate)