I'm using both kinds ... 10-1-1 and 1-10-1 ... I used pro-mix potting soil ...
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GrowRebel... From your NPK numbers, I see you are using Fossilized Seabird Guano for your Bloom Fertilizer - Am I correct ?
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When using Guanos - either Bat or Seabird for Flowering the key is timing. With all Organic Fertilizers you have the soluble numbers and the insoluble numbers. With 1-10-1 NPK, that means 1-10-1 will be available immediately when watered or mixed in. But
High P Guanos always have 2 to 3 times the stated numbers in Total P. So, your 1-10-1, probably has a total of 2-20-2 up to 2-30-2 Total NPK.
That is where the danger lies.
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Lots of people keep pouring it on all through flowering, thinking more is better. With High P Guanos - feed them to your plants starting the last week of veggie growth, thru the first month of flowering - THEN STOP.
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Otherwise you will push your soil pH out of limits, overload your soil with P, cause nute lockup and that will work against you.
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During the last month of flowering, there should be a sufficient amounts of residual P from your watering / feeding to finish. The key was the timing, start early, stop early - coast to the finish line.
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The first two weeks, of the last month of flowering, is a good time to water with molasses & worm castings tea - to keep Mary healthy. The last two weeks of flowering should be water only - unless a obvious deficiency shows it's ugly head. Considering the quality of your soil, that should not be an issue.
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Just my 2 cents worth... Hope it helps...
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Keep it Real... Organic....
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