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Re: Hardness mystery solved

In my intro I mentioned a hardness problem in one of my former tank
which I had blamed on the aquatic plant soil Profile. Some of you
suggested it might be the sand. Well in all the excitement relating to
my new fertilizer I forgot about this unil last night. I took some
phosphoric acid and poured it over some of the same sand I used in that
tank. I got a definite reaction, you could actually hear it bubbling
like Rice Krispies. Sheesh and I had no idea this sand had anything like
limestone in it! Well I guess I'll do this test to any sand or stone I
want to use in the future, I also can give Profile more of a reccomend
now that the source of the hardness problem is nailed down.