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  1. Keesje

    Jacks 321 vs Masterblend/Calnit/Epsom salt analysis

    I don't think that that is the point for nutes like Peters (or Jacks perhaps) It would be not smart not to adjust your EC and amounts of N for example, depending on which stage your grow is. Manufacturers who claim that you can use the same formula are misleading their customers. Growers who...
  2. Keesje

    GH Armor Si BANNED in Canada.. Alternatives?

    You just need 1.5/2ml per 10 liter water in your rez. So a liter of Potassium Water Glas will last a long time.
  3. Keesje

    GH Armor Si BANNED in Canada.. Alternatives?

    Just buy Potassium Water Glas. Very inexpensive and the same stuff. Rhino Skin is just a rip off.
  4. Keesje

    Understanding and Calculating Nutrient PPM

    @Renfro Do you keep the ratios between Calcinit and your other Nutes the same? Or will you give less Calcinit once your plants are in bloom?
  5. Keesje

    Anyone using dry potassium silicate? (AgSil)

    They probably just added food coloring to it. To make it look a bit more interesting.
  6. Keesje

    Anyone using dry potassium silicate? (AgSil)

    Why do you want it in the same rations as Armor Si?
  7. Keesje

    Compound HQ's Grows

    There are some cases indeed that they think that people did get it again. But they are not sure how that really works yet. Also if you will get it again, it probably will be less heavy. There is so much they still don't know about this virus, but most scientist do think that it will be not that...
  8. Keesje

    Found cheap Jack's equivalent

    I don't think so, but again: I am no expert. Perhaps it is a little low on P (when you use Brown with Calcinit) But most people add extra P anyway when they use pH- So the P numbers could also be ok probably. The Yara Brown is used by growers with a good reputation and they have solid and great...
  9. Keesje

    Best LED for high yield small space

    You might want to use periods and commas and punctuation.... Your story about Blackdog is more a fan's story than you substantiate it. There are also other lamps that use UV-A and UV-B. Penetration has not so much to do with watts per diode, but with dispersion. You say you have done...
  10. Keesje

    Found cheap Jack's equivalent

    OK, that sounds spooky
  11. Keesje

    Found cheap Jack's equivalent

    The cannabis growers that I know that use Yara are using Yara Brown and Yara Calcinit. They start with A (Calcinit) and B (Yara Kristal Brown - some use the Orange) in the proportion 1:1 in the first week. And they build this up to A:B in the proportion 1:1.5. (be careful how to mix!) I also...
  12. Keesje

    Compound HQ's Grows

    How are you dealing with Covid-19? Feeling better already?
  13. Keesje

    Found cheap Jack's equivalent

    I am not an expert on nutes. So no clue. There are many cheap nutes. By Peters or Yara for example. Especially dry nutes are cheap.
  14. Keesje

    Anyone using dry potassium silicate? (AgSil)

    As said, I use Actisil, which is meant as a foiliar spray. It contains silicon in the form of stabilised orthosilicic acid. I tested it also on my clones. I had 2 Cloners. One sprayed with Actisil and the other cloner just water. I could see significant better results with the clones sprayed...
  15. Keesje

    Anyone using dry potassium silicate? (AgSil)

    There are a lot of studies done about the benefits of silicia. Almost all with the outcome that it benefits the plants. I use YaraTera Actisil as a foliar spray. It is Orthosilicic acid, which is more expensive to make, but easily absorbed by leaves. Actisil is not available in the USA market...
  16. Keesje

    Compound HQ's Grows

    Finally got an answer from Yara USA (after writing to 6 different people, only 1 replied) Actisil and Sikal are not available in the US market at this time.
  17. Keesje

    Is VPD more important than light intensity for growth?

    I doubt if it will have any benefits on the growth. Also be aware that you don't give them less light in total. Where it might give some benefit is in a more gradual warming up of your plants and your environment. As a result, perhaps slightly less chance of getting your buds damp/wet, and...
  18. Keesje

    Still no independent review of the GeekBeast Pro???

    The tests may be credible. I have no idea because all of that is a bit too difficult for me. I was just saying that I was hoping Shane will take testing more seriously then he is with writing down the results in a chart, because some things were (and still are) wrong there. Several people have...
  19. Keesje

    Still no independent review of the GeekBeast Pro???

    Lighten up! I just asked @hybridway2 ( a very respected member) a question. This is a forum. If you are happy with it... good for you. But if I want to know more, there is nothing wrong with that either, I think.
  20. Keesje

    Still no independent review of the GeekBeast Pro???

    On the website the numbers seem to be correct (not sure if the par numbers are correct) But as I am interested in perhaps buying some led in the future, I am interested in a good comparison. In what way do you think the result of the tests are not correct?
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