LECA PH

[swiatoniowski]

Hello,

I don't use oryginal LECA in fact, because it is not obtainable here. But I use something very similar.
I measured ph of water with granules and it turned out, that even after few rinsing it is 9 ph !
I cannot find good solution how to make it for example 6 ph. I suppose I can use 10 % vinegar with water, soak granules and later rinsing again in pure water.
Could you advise me or give link to thread with such recipe ?

Piotr