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Re: Metal nuts in the tank
You probably don't need to worry about it if you can't find the nuts. The
other suggestion was a good one though -- try a magnet. Maybe one of the
magnets you can get at a hardware store with a hook (or on of the really
powerful rectangular magnets) hung from a string so that you can lower it
between plant groups. Chances are the nuts will pull through mulm and such
if you use a powerful enough magnet.
I had a pushpin and a small zinc-coated (galvanized) screw in one of my
tanks for a few years before I found it while "rebuilding" the tank. Never
noticed any problems while the metal parts were in there. I guess you won't
need to worry about a zinc deficiancy with all that hardware in there ;-)
>While replacing a fan, I managed to drop two #6 nuts into the tank.
>This tank is full of plants, 2 feet deep, and has a sand and fine
>soil substrate. The nuts are gone. I'll never find them.
>These were regular hardware item bright finish nuts, probably some
>kind of steel with a zinc coating. How worried should I be about
>metal toxicity? Is there anything I can add to the tank to make it
>To make matters worse, in a few days I am leaving for a week and a
>half, so if things go south there won't be anybody to take emergency