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Fertilizer question
Recently I purchased a jug of chelated iron solution for my plants. I found
that it was much cheaper than buying the plant specific iron sold in pet
stores. The problem is that it also has several other micronutrients in it
including copper. There is only .12% copper, but it says that it comes from
copper sulfate. I know that copper sulfate is often used to kill unwanted
plants and algae in ponds, but it is something like 80% copper sulfate.
Would this small amount be damaging to my plants? I have been using it for
awhile already and haven't noticed any problems. Any advice would be
appreciated.
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