The Planted Tank Forum - View Single Post - Miracle Gro Liquid
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post #4 of (permalink) Old 12-28-2012, 10:56 PM
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Seattle_Aquarist's Avatar
Join Date: Jun 2008
Location: Seattle, WA
Posts: 3,103
Hi xev11,

I wouldn't risk my fish; a lot of the commercial fertilizers for garden use contain very toxic heavy metals. For example the first one on your list - Miracle Gro Organic All Purpose contains:

Arsenic - 3.43 ppm
Mercury - .0054 ppm
Cadmium - .838 ppm
Lead - 1.80 ppm

I would not risk my fish to try to save a couple $$ on plant food. I suggest using Seachem products or if you have several tanks or large tanks dosing using the EI method using the proper chemicals.

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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