vermiculite in the aquarium? - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 03-12-2013, 12:23 AM Thread Starter
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vermiculite in the aquarium?

I started a using Jiffy brand seed starter mix for my white worm culture.


It contains sphagnum peat moss, vermiculite, lime and organic wetting agent.

Even with washing the worms really well (which I won't do) I will still probably get some vermiculite in my tank and my fish might eat some.

I believe vermiculite is silica based.

Will vermiculite pose a health risk to fish?

Will vermiculite cause a diatom outbreak in my aquarium?

Thanks
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post #2 of 4 (permalink) Old 03-12-2013, 09:36 PM
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A long time ago I had a set up where I had made some little dirt 'pods' out of a peat/sand/vermiculite (and probably other stuff) mix. It was supposed to be under a gravel cap, and contained in a peat pot. I'm not exactly graceful, and vermiculite isn't the neatest substance to try and work with, so I ended up with plenty all over the tank.

I don't think there would be any harm to fish.

I'm skeptical about the bit with adding minerals to the tank causing diatom blooms. I don't think anything we do/add will significantly increase the amount of dissolved silica, and even so, I'm also doubtful that dissolved silica is the limiting factor for diatom growth.

I think the biggest concern would be cosmetic. Until you do a gravel vacuuming, you'll have little floaty shiny bits scattered around your tank.
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post #3 of 4 (permalink) Old 03-12-2013, 09:48 PM
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Vermiculite is inert.. I wouldn't worry that it would harm anything in the tank, other than looking messy
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post #4 of 4 (permalink) Old 03-13-2013, 07:10 PM Thread Starter
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perfect thank youfor responding
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