Increasing dH

[peterkoh]

Hi folks,

I realise most plants requires dH of 2 and above. I understand water in Sg is so soft at around 0. Heard that adding baking soda will increase dH. Is that correct ? If it is, how much per litre ? If not, what can I add ? Thanks.

Cheers,
Peter

[DEA]

true, yes
needed, not really
my plants are doing fine at undetectable kh levels

as for increasing kH
don't mind the math, i'm calculating as i go
1 dkH = 17.8ppm
1 dkH = 17.8mg/l
1 dkH = 0.02g per litre
multiplying by 84/61 = 0.025g per 1 litre water

so if you have a 200 l tank
use 20g to increase 4dkH
i think that's correct