cal-mag(GH) vs Epsom salt for magnesium def

Title says all.

I got a bag of rock salt from a garden store but I will order some GH calmag online if it is really that much better.

Just don't have a lot of extra money so I don't wanna buy if I can get by with what I got.

epsom salt if you only have a Mg defic. if you have both calcium and magnesium defic, then cal/mg is better.

tharoomman said:

rock salt

Click to expand...

is not epsom salt. FYI.

rkymtnman said:

epsom salt if you only have a Mg defic. if you have both calcium and magnesium defic, then cal/mg is better.

is not epsom salt. FYI.

Click to expand...

Lol I dunno man, I just called it what the bag says.

Thank you for the advice.

tharoomman said:

Lol I dunno man, I just called it what the bag says.

Thank you for the advice.

Click to expand...

you said rock salt which is not epsom salt. but that bag is what you want. i use at 1gram per gallon for a week or so and it should fix te problem

Here's a pic.

My bad x2 lol

that doesn't look like a Mg defic.

could be calcium defic. you in soil? hydro? what is pH?

seeing that pic, i think cal/mg would be better.