I only mix what I need of the MC. I did make too much one day and the next it had some floaties on top, almost yeastie like. It was in rain water so it may act differently in tap. I haven't done enough testing myself to say it's OK. I find it does separate and and if it sits too long you can see the silt on the bottom.
I stir mine after every liter of water given, since it takes me time to water as I have A-D-D when a joint is in my mouth..
I stir mine after every liter of water given, since it takes me time to water as I have A-D-D when a joint is in my mouth..