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post #18 of (permalink) Old 01-29-2013, 10:06 PM
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Join Date: Jun 2008
Location: Seattle, WA
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Originally Posted by UDGags View Post
Probably no

Most contain urea (listed on back as ammonical nitrogen sometimes), which breaks down into ammonia.

And a good portion contain heavy metals, which are toxic as well. Check the contents of the one you want to buy here
Hi All,

UDGags is absolutely correct regarding the heavy metals.

I use Miracle Grow Water Soluble General Purpose for my emersed growth plants but I will not use the product in my aquariums because it contains: Arsenic, Cadmium, Cobalt, Mercury, Molybdenum, Nickel, Lead, and Cobalt (Co). I value my fish (or invertebrates) too much to do that.

45 Gallon Tall; 96 Watt AH Supply CF; 6700K; & 30 Gallon Long; 2X36 Watt AH Supply CF; Press. CO2; UGF; Heat Treated Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)

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