Why should I not do this? -Fert question - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 12-30-2008, 04:25 AM Thread Starter
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Why should I not do this? -Fert question

I'm sure there is a very good reason that escapes me, but I've not found a reasonable answer to why I cannot use a very small amount of something like Peterson's 20-20-20 fertilizer in the aquarium. The references I found so far say not to use them because one doesn't use macronutrients in aquariums, which is at odds with other things I've read.

Just why is it a bad thing to do?

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post #2 of 7 (permalink) Old 12-30-2008, 04:42 AM
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I think it has something to do with the type of ferts we use in the planted tank being nothing more then different kinds of salts. Where in the lawn/garden type there are actually chemicals that can cause serious irritation on human skin much less a fishs' breathing organ.

Im sure someone will come along and elaborate, but untill then no schultz in the aquarium.


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post #3 of 7 (permalink) Old 12-30-2008, 04:49 AM
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The biggest issue is that terrestrial fertilizers typically use ammonia-derived nitrogen sources. Potassium nitrate (KNO3) is used instead for the purposes of adding nitrogen to planted aquaria.

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post #4 of 7 (permalink) Old 12-30-2008, 05:01 AM
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And we all know ammonia in the tank is no bueno.


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post #5 of 7 (permalink) Old 12-30-2008, 05:11 AM Thread Starter
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Thanks guys. I really couldn't find much info on this except for the "never do this" messages. Now I know why.

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post #6 of 7 (permalink) Old 01-01-2009, 11:07 PM
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Just to clarify, there are no "dangerous chemicals" in Schultz, it is just premixed salts.
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post #7 of 7 (permalink) Old 01-02-2009, 01:45 AM
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Some forms of urea are found in lawn/garden fertilizers too. It is another form of nitrogen.

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