Seamaiden
Living dead girl
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You can, but you need to be careful because you're getting a lot of other stuff (I can't call them secondary PLANT metabolites, because algae technically isn't a plant), hormones, etc, along with those nutrients. And if you overdo it, well... good luck!Why do you not want to use sea kelp?
technaflora soluble seaweed is like 0-0-12 ?
Spent blossoms of other plants will have P located in those tissues.Not entirely sure what to use for p. Huge shot in the dark but crabshells? Idk. I use banana peels for K though. I have a humble pile of compost going in a small tote in my grow room. Fun as hell bro. It's an amazing process. Amazing how hot the pile gets. Read a book called let it rot. Pretty interesting stuff.
I've used it, but you've really gotta be careful as it's very alkali, so you can only use a little bit.Fish bone meal is 3-16-0...
As for potassium only dry amendment... sulfate of potash is some serious shit at 0-0-22 I believe... But I can't say much as for actually using it.
Do you feel that your mix is lacking K for some reason? What is your current mix like?
Edit: Someone said something about crab meal... 'tis 4-3-0, FTR.
I recently learned that lye is made from soaking hardwood ashes.