RDWC PPM helps plz

[A Bloke Down The Pub]

I thought for Lucas you added epsom salt for Cal and Mag...?

It'll add mag, but no cal.

Unless your water is very soft, there's probably enough calcium in it to make adding more unnecessary.

[BAMF]

up to 600 ppm in veg and I would say no more than 900 ppm in bloom,,, Remember... less is more

I know there wasnt alot of fancy chart pics or mumbo jumbo of this and that but I hope this helps,,,