GH booster
KH2PO4
KNO3

You can get the CMS+B if you want.
I like TMG personally.

The GH booster has a fair amount of K2SO4, so that, Ca, SO4, Mg need not added if you add about 1-2 degrees of extra GH per week.
The added GH will not do any harm to any plant/fish etc.
Not enough will do harm.

Regards,
Tom Barr