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sterilized lava rock
Hi Ron!
Its me again, Greg B. in Fort Lauderdale Fl. I asked you about the lava rocks, and you suggested that " I sterilized because of the toxins that pure lava rock has. I would water every 20 minutes or so for 5 minutes and maybe more often." How would I go about sterilizing them? They are growing tomatoes just great but the ph has to be adjusted every day because it goes way up. I am adding asprins to control it but I am afraid that it will do harm to the plants. Has lava rocks got the acid 'built in it or something? anything I can do to get rid of it? Thanks a bunch, your friend in Florida Greg B. |
#2
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You can clean them with a 10 percent bleach solution or cook them in an oven at 250 degrees for an hour.
Ron |
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