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Too much nitrogen, how should I continue fertilising with BioBloom from Green House Feeding ?
BlueSugarLeafstarted grow question 7 months ago
I noticed a slight nitrogen toxicity about 3 weeks ago. Now my plant is okay with it (without flushing) & in the flowering phase now.
What is the best way to fertilise BioBloom without causing new nitrogen toxicity, as this fertiliser contains 4% nitrogen?
What would you do?
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m0useanswered grow question 7 months ago
Use less of it. or use less of it and add in a PK boost. Don't forgot the secondary macros like CaSMg and micros.
Mg can also influence N tox, but the plant still uses a good amount of N in bloom. Just a bit less then in Veg, it is still a macro nutrient vs micro.
I find some bloom fertilizes lower the N to much. I saw one that was 2-7-7 and that's just not enough to me.
You could also try giving it a nice flush now that your switching to bloom and just wash out any extra N kicking aorund in the medium. Assuming that stuff is a fast dissolved salt based fertilizer and not a slow release dry amendment.
Good Luck!
001100010010011110answered grow question 7 months ago
4-9-9? image is a bit iffy reading it.
the problem with this ratio is that you will either have too high of P or too low K. 1-1-2 is a better rough average.. expect to deviate a fair amount as these are heavily rounded. if in soil, you'll need more N due to the source of N needing microbes and such to make it plant ready. This ratio is for 100% plant-available ingredients. Some translation needed for soil context.
for a proper amount of P at roughly 50ppm, you have 50ppm N and 100ppm K... Even 50ppm of N would be too little in flower, but as you correct a toxicity, this would be fine.
For a proper amount of K at roughly 180ppm - you have roughly 100ppm N and P. The 100ppm N is probably fine, but 100ppm P may run into issues over 8-10 weeks, if not initially. So this might be tolerable.
a better mix of products would be 5-5-9. If you could get a weighted average by mixing in another product, this is very doable. You may need a bit less N in flower and if combating a current toxicity issue. but would be great in vege in future and should avoid that tox, whic means you can simply drop N in first week or two of flower and never see a toxicity from it. 4-4.5% - 5% - 9% NPK (USA standards for labels) would probably do well for flower... again this is for 100% plant-ready nutes.. any magical soil nutes that require 'something' to help breakdown the ingredients to enter the plant will need some translation for that extra, useless step, lol..
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