friends question on cal-mag!!!

Welcome to the Growtent on Youtube has great videos on this and details the different quantities at different stages of plant growth. He mentions that the size of the plant as opposed to age is a crucial factor in how much nutes in general you are giving. Smaller plants, less nutes is what I take away from his content. Auto vs. Photo is also a deciding factor. Check him out, he's helped me a lot.

Hey Pal. So depending if its straight up calmag or does it have N in it. So how i do it. And never have calmah issues or if I start to see it. I bring my 110 ambient tap ppm of 110 to 250-300 ppm.. so if your tap is 150 still try bring it to 300ppm.i used Epsom salt and cal powder.. but In that range should be fine.. Once a week. Do inbtween feeds. Good luck pal.

"manic botanix ppm calculator" use google... the url is buried in my bookmarks somewhere.. i don't even use the bookmark. but, make sure none of your other products used have Ca... if so, you'll have to tabulate the ppm output... depending on tap water, your total Ca should probably be around 100 o a bit higher. with very hard water, 100 might be fine. So, tap water will impact this to some extent. If RO.. i'd guess 110-130 is a good range? not sure how much my water adds, but ~100ppm with fairly hard water doesn't ever show deficiency symtpoms. (~6pH .. you go lower and you need more Ca or it gets locked out eventually. pH will impact ratios of nutes that result in healthy plant) ratios and concentrations... get the ratio right and then it's easy as pie to dial in concentration.

It will absolutely change your EC/PPMs. You should always measure the EC or PPMs when you add something to know how much you are adding, so you can recreate your results. It depends on you lighting, VPD, and other nutrients but EC .2 (100 ppms) of cal-mag is a good starting point.

You're growing in DWC, yes? You don't measure calmag as a value ... you just add 1tsp of it to your bucket... that's all... it will change your ppm but probably won't do a thing to your EC. DM if you aren't sure what to do here... Good luck...