fertilizing low light tank w shrimp? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 7 Old 08-26-2011, 01:34 AM Thread Starter
fertilizing low light tank w shrimp?

I have a 55g that I am trying to add a large amount of low light plants to, it currently houses a few 100 shrimp give or take. I would like to add fertilizer which may or may not be needed I'm new to plants. Currently I have java moss, fern, water sprite, sword of some sort, rotala it's a work in progress. All the ferts I'm seeing have some amount of copper I'm wondering if they are safe with shrimp?
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post #2 of 7 Old 08-26-2011, 09:29 AM
Copper will kill shrimp dead. Have you looked at Seachem's Flourish? I believe it is copper free.

Some sort of fertilizer is almost certainly going to be needed.
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post #3 of 7 Old 08-26-2011, 10:43 AM Thread Starter
Thanks for the response I looked up flourish it is very low in cooper 0.0001%, I'm researching but it seems the lowest so far.
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post #4 of 7 Old 08-26-2011, 10:49 AM
BarbH's Avatar
I use Fluorish Comprehensive in my planted tank and have had mystery snails in there. My snails are doing fine, and I believe that they too like shrimp are sensitive to copper. It probably should be fine as long as you dose according to the directions.
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post #5 of 7 Old 08-26-2011, 11:30 AM
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You will need nutrient additive (no fish means less organics) and Flourish Comprehensive is the best since it is complete. It has copper, any good fertilizer should as copper is essential to plant growth. But the amount is so low that it will absolutely not harm any fish or invertebrates.

It is possible to have far more copper in the tap water than you would ever get from Flourish. The level that is considered "safe" for human consumption will kill many fish. I have known of cases where the fish in aquaria were all killed following a water change after installing new copper plumbing.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #6 of 7 Old 08-26-2011, 11:41 AM Thread Starter
Thank you for the replies, I should have added I do have some fish in the tank but not many, just a couple of guppies at the moment. I will be picking up some flourish, thanks for the info.
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post #7 of 7 Old 08-26-2011, 03:18 PM
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Most of the common fertilisers (ie, anything for aquarium use) will have chelated copper.

Chelated basically means that it's in a compund form that's fairly unreactive... Plants can break it apart easily, but it's save for your animals.

Originally Posted by Christople View Post
^^ genius

Soil Substrates Guide:
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