I have a recipe using oyster shells that I have used in the past but found it to cumbersome and time consuming so now I just use cal/mag. But thank you for the tip Shed.
And as for the Appalachia F5, It has sprouted so I need to get some nomenclature going.
Strain: Appalachia (F5) (Feminized Hybrid) from @Copa Genetics
Genetic Makeup: Hybrid Indica Dominant
Pot/Bucket Size: 3.5 Gal
Tent Size: 2' x 4'
Grow Space: 8 sq ft
How Many Plants: 1
Environment: Indoor...