cal mag amount
- Thread starter osowhom
- Start date
larrypizzimp93
Well-Known Member
stay at 4ml/gal and if they're still showing it go to 5ml. Also depends what medium you're growing in
Rurumo
Well-Known Member
Don't do that. Do you have pics of what you are seeing? Also, what sort of water are you using? RO or Tap, and if tap, look up a water quality report that has stuff like PH, Alkalinity, total hardness, etc...also, see if it has the calcium and magnesium levels on it too. If you are on city water, this report is available someplace online. Always start with the water first, then look at media/nutrients.
larrypizzimp93
Well-Known Member
This too. If I use tap water I use 2ml
Arkos
Well-Known Member
Ro water, coco, led grow here, if I feed my plants 0.3 ec calmag they start showing deficiencies, it has to be 0.4 ec of calmag in the Ro water or my plants are not happy at all.
Symptoms, red stems, yellowing leaves between veins, brown spots etc.
P.s. go with e.c./ppm to measure how much is in there before adding the base nutrients. Sorry if I'm stating the obvious
Symptoms, red stems, yellowing leaves between veins, brown spots etc.
P.s. go with e.c./ppm to measure how much is in there before adding the base nutrients. Sorry if I'm stating the obvious
lusidghost
Well-Known Member
You're using cal mag with tap water? That seems a little extreme. If they need it they need it, but damn, hungry girls.
Arkos
Well-Known Member
His tab water could also contain low amounts of calcium and magnesium, my home country is like that, clean good water but low in those two minerals.
Listen to Rurumo and get some pics under natural light.
boilingoil
Well-Known Member
Red stems are lack of Mag or too intense a light, calcium is rust colored necrotic spotting, pics please.
osowhom
Well-Known Member
Tonight I will thanks
larrypizzimp93
Well-Known Member
IF I use tap I do use 2ml. It's not much and ensures i'm not gonna get a cal def. My tap is absolutely horrible tho it's been years since i've used it
twentyeight.threefive
Well-Known Member
Do the instructions say to double or triple the amount for the first feeding? Why would you think that's ok?
More often than not plants don't need CalMag. Another internet bro-myth. Calcium and magnesium deficiencies are usually caused by overfeeding.
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