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heyhey started grow question 4 years ago
I have terrible case of calcium deficiency , How to stop it , this is only plant that have the symptoms ,but its flowering at greatest rate i think this is affecting, bud formation how should i feed her ? maybe standard Advanced Nutrients dosage isnt enough for them? Thanks guys
Green Crack Auto
8 weeks
Green Crack Auto heyhey
Green Crack Auto
18 comments · 4 years ago
Week 8
Buds. Not fattening
The_Projexx answered grow question 4 years ago
Alright so here what I think you should do . Your PH is affecting nutrient uptake in your hydroponic set up , I would firstly raise the PH to 5.8 so that your plant doesnt get nutrient lock outs. In order to deal with our CalMg problem , I would use the recommended dosage that's on the bottle which will be 2ml per litre of nutrient solution . I can see that at the very bottom of your plant the leaves have turn to a rust colour I would take those away to help prevent unwanted pest from attacking your plant as leaves that are like that are a perfect nesting/Starting point for them . You could also do a CalMg foliar spray but because your in flower I would be really careful about doing it like that . All in all your plant(s) looks like its doing fine except for the few minor things that I've suggested here . I hope this has helped you understand whats happening to your plant abit better .
CRiSPrGrow answered grow question 4 years ago
hey man plants absorb 95% of the calcium on their leaves and around 20% of the calcium through their roots, calmag foliar spray (up to six times a day) + calmag in the feed - should recover in 5 days. Just try to keep the flowers dry. Hope this helps ! :rocket:
mad_scientist answered grow question 4 years ago
Hello @heyhey ! What you need to do is to adjust the EC of your solution at 0.5 ms/cm using only cal/mag and after that you can add the other nutrients. If you already doing that then start checking regularly your tanks PH. You might experiencing some PH drops. Also if you have a highly concentrate PH buffer of phosphoric acid you need to dilute it a little bit before you put it in your tank. Very concentrate phosphoric acid reacts with calcium and precipitates in form of calcium phosphate ( not water soluble and not available to your plants ). Happy growing ! :facepunch:
Removed answered grow question 4 years ago
Calcium deficiency start several weeks before the symptoms apper. In flowering I use a dose of 0.5 EC or 250 PPM worth of cal / mag (for me that is 1 ml per liter of cal max, which is the product I have). Even if you give enough calcium now, the damage on the leaves will not go away. Also, be sure you don't have excess of phosphorous or potassium, since that can lockout calcium. Hope that helps.