CalMag seedling dosing question

Bubba's girl

Bubba's girl

Well-Known Member
daloudpack said:
Doesn't look like cal deficiency to me and with ur leaf tips pointing down I'd say N toxicity because calmag has N in it... If ur not cutting back on N with ur nutes to make up for it u can easily lock urself out...
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It's not N toxicity, I've barely given em any nutes or Calmag. I think they were a bit droopy in the pics because they were ready for a watering. That's why I wanted advice at that time it was time to water them, I wanted to know how much Calmag was safe to use on em. I generally have a habit of babying my seedlings a little too much when I first start feeding, new brand of nutes for me so I wanted to take it easy to start. I gave em a decent feed along with 5ml/gal a few days back, they really had a nice growth since then, as well as perking up and nicer colour in general. I just upped the power to 600, hoping that gets things moving a bit quicker.
 
Woyaboy

Woyaboy

Well-Known Member
SSHZ said:
I've been growing in Pro-mix for over 20 and I tend to disagree with the company's statements above.

1. It is not necessary to use purified water, but everyone's water is different and some should not be used (like mine). If the ppm of your water is over 250-300 to begin with, do not use it!

2. I don't leach, I NEVER have. Use a good quality fertilizer, don't over apply it and watch your plants carefully to adjust the ppm when necessary, and you'll be absolutely fine. A good flush at the end- at least 10-12 days is helpful.

3. And regarding the pH, ALWAYS 6.3-6.5 going in, and you'll always be in a good range.

What they forgot to say is, always add more lime and perlite. The lime dose they put in doesn't last long enough for an entire crop, and the perlite addition will help with the compaction that often happens around the roots.
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I imagine leaching is only important with those synth's, not an organic soiless. I honestly can't imagine why leaching would be beneficial in an organic grow, especially water only grows.
 
S

SSHZ

Well-Known Member
Leaching has been debated for years and years. I don't leach during the grow, only at the very end. I just think it helps the taste of the buds personally, and the buds seem to burn better.

Regarding Promix and letting it dry out too much- it "hardens" if it gets too dry and then water doesn't penetrate the medium as easily.
 
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