Do you add Dolomite Lime to your mix?

or you just leave it. Mine was at Ph 6 when I tested before adding the lime. technically shouldn't this be an ok PH as long as I Ph my water everytime and flush the coco every month or so?

perhaps its the lime thats making the plants yellow so Badly.

thanks for the tips, I would really like to use Coco as its so easy to get for me. But I am still new so proMix may be better untill I get more grows under my belt.

kd