Tropical Fish Keeping - Aquarium fish care and resources

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k19smith 08-26-2011 01:34 AM

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?

ladayen 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.

k19smith 08-26-2011 10:43 AM

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.

BarbH 08-26-2011 10:49 AM

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.

Byron 08-26-2011 11:30 AM

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.


k19smith 08-26-2011 11:41 AM

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.

redchigh 08-26-2011 03:18 PM

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.

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