Hi all.
My box of premade GH powder is almost empty and want to start making my own with CaSO4 and MgSO4.
For MgSO4 I am fairly confident as I have some from Aquaplantscare.uk and theres only one variant of this which is MgSO4.7H2O.
I dont know the grade of this (percent purity), so if anyone knows I would like to know as well. As in, is it 95% pure or 99% etc.
For CaSO4 I have some powder from a relative, where it only says CaSO4 technical grade. I assume it was bought from a source for making figures, casts and that kind of stuff.
I know technical grade is not ideal, it will contain more traces of other stuff.
Is technical grade a no go for a fish tank?
My second question is, what is this CaSO4 likely to be, CaSO4.1/2H2O or CaSO4.2H2O?
Ive got half a mind to find a higher purity Calcium source somewhere else. Someone suggested getting it from a brewers shop.
They also only list CaSO4 without mentioning the "crystal water" amount. Im not sure what crystal water is called in english but I hope you understand what I mean.
What kind of CaSO4 would I be getting from a brewers shop? I assume they only sell foodgrade Calcium, and foodgrade should be safe yes?
My box of premade GH powder is almost empty and want to start making my own with CaSO4 and MgSO4.
For MgSO4 I am fairly confident as I have some from Aquaplantscare.uk and theres only one variant of this which is MgSO4.7H2O.
I dont know the grade of this (percent purity), so if anyone knows I would like to know as well. As in, is it 95% pure or 99% etc.
For CaSO4 I have some powder from a relative, where it only says CaSO4 technical grade. I assume it was bought from a source for making figures, casts and that kind of stuff.
I know technical grade is not ideal, it will contain more traces of other stuff.
Is technical grade a no go for a fish tank?
My second question is, what is this CaSO4 likely to be, CaSO4.1/2H2O or CaSO4.2H2O?
Ive got half a mind to find a higher purity Calcium source somewhere else. Someone suggested getting it from a brewers shop.
They also only list CaSO4 without mentioning the "crystal water" amount. Im not sure what crystal water is called in english but I hope you understand what I mean.
What kind of CaSO4 would I be getting from a brewers shop? I assume they only sell foodgrade Calcium, and foodgrade should be safe yes?