What macronutrient is most critical? - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources

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post #11 of 16 Old 04-19-2011, 03:31 AM
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I hitched my wagon to (Tom Barr's Non CO2 method) with my planted tank and have not looked back.
Plant's receive all nutrient's through modified EI dosing as described by Tom Barr and cost is about 30 dollars a year for Dry fertilizers.
Many different ways to grow plant's but in my view(expierience), supplying nutrient's in non limiting amounts produces the best result's for me in my tank, with my plant's .

P.S. Have lost one neon tetra(out of approx 80 assorted fishes)_ since setting the tank up last july while following my dosing ,maint routine.

The most important medication in your fish medicine cabinet is.. Clean water.

Last edited by 1077; 04-19-2011 at 03:35 AM.
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post #12 of 16 Old 04-19-2011, 10:49 AM Thread Starter
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Good to know, thanks!
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post #13 of 16 Old 04-19-2011, 10:58 AM
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I would experiment with macros rather than micros too...

Probably potash or phosphorus... Should have plenty of ammonia.

In my tanks I dose potassium and micros... I have enough phosphorus and nitrogen from the fish and my soil substrate.

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post #14 of 16 Old 04-19-2011, 12:56 PM Thread Starter
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I would experiment with macros rather than micros too...

Probably potash or phosphorus... Should have plenty of ammonia.
In my tanks I dose potassium and micros... I have enough phosphorus and nitrogen from the fish and my soil substrate.
That's my plan. I'm going to start with the trace, to see what happens since I already have some on order. Then I'll try different macros over time. I don't really want to "EI" using Flourish Comprehensive, but I'll experiment with dosing that a little heavier just to see the response. Of course, that won't help me narrow down the limiting nutrient(s). Once I identify the current limiter, that will likely just make something else a limiting factor as growth improves!

Eventually, I hope to get to a point where CO2 and light are the only limiting factors.
Hmmm, that's what EI dosing does . I may be making this harder than it needs to be. I just hate the thought of overdosing plant nutrients and then relying heavily on water changes to not overdose my fish.
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post #15 of 16 Old 04-19-2011, 06:20 PM
I've not heard of fish being harmed by properly used EI fertilizers. I add mine to the tank dry and my fish try to eat them as they dissolve. It has not seemed to have any effect on the fish. I've had lots of fish spawn in my EI tanks.

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post #16 of 16 Old 04-19-2011, 07:03 PM Thread Starter
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I've not heard of fish being harmed by properly used EI fertilizers. I add mine to the tank dry and my fish try to eat them as they dissolve. It has not seemed to have any effect on the fish. I've had lots of fish spawn in my EI tanks.
That's good to know, I appreciate it!
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