4 bulb t8 light fixture? - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 15 Old 09-16-2012, 04:26 PM Thread Starter
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Would t5ho put me in too high o light?
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post #12 of 15 Old 09-16-2012, 07:04 PM
It won't hurt.
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post #13 of 15 Old 09-16-2012, 07:47 PM
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I wouldnot put dual T5 over a 55g, but then I consider light from the fish's perspective first and foremost and I make the plants manage.

Before going further into this, you initially said the plants were not doing well, can you be more specific? A photo or two would help.

You're dosing macro and mico daily, which is a lot of nutrients, and I agree your T8 dual tubes are not matching this. But the CO2 is another issue; I am not a fan of liquid carbon supplements like Excel because they are toxic chemicals that outright kill some plants, and if overdosed will kill other plants and fish and bacteria. The sole ingredient aside from water is glutaraldehyde, an antimicrobial, bactericide, fungicide disinfectant used to sterilize in hospitals, so that says a lot about what is going in the fish tank. Diffused CO2 is a very different thing.

It is also worth knowing what you want from this tank? Is it a fish tank that happoens to have plants, or a plant tank with fish that are secondary? The expected plant response has to be considered when working out light/nutrients/CO2.

Byron.

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 #14 of 15 Old 09-16-2012, 07:53 PM Thread Starter
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I cant post pics from my iphone on here but mostly they are browing and leaves are dieing.
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post #15 of 15 Old 09-17-2012, 06:07 PM
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I cant post pics from my iphone on here but mostly they are browing and leaves are dieing.
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A picture is truly worth a thousand words. Which plant species are doing this? There is obviously a nutrient/light imbalance and one has to find it. Presently there are some nutrients being overdosed beyond the c apacity of both the light and CO2, and this can be dangerous because an excess of certain nutrients causes plants to shutdown assimilation of others. Another example of the "more is not usually better" idea.

My thinking is to downscale things, i.e., stay with the dual T8 with 6500K tubes, stop the Excel (this could be killing some of the plants on its own), and reduce the macro/micro nutrient doses. I assume you are using dry ferts that you mix yourself?

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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