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post #1 of 9 (permalink) Old 12-25-2010, 04:05 PM Thread Starter
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My plants

So my tank is about cycled,15 Days in it shows zero ammonia and nitrites, with about 10 ppm nitrates. Its the third day with my nitrates staying the same. I have a few question I would really appreciate yalls input.
1. Are my plants the reason why my nitrates seem too stay the same?
2. When do I start adding fertilizers to my tank?

I also have this brown algea growimg on my leaves..and my baby h.c is growing some type of stringy fuzzy thing. Only plants not being affected are my vals... Help.
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post #2 of 9 (permalink) Old 12-25-2010, 09:02 PM
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Plants prefer to uptake ammonia over nitrate. Likely they're chewing up whatever ammonia is being produced and haven't gotten into the nitrates much. Initially, ammonia was probably being produced faster than uptake, and now the plants have caught up, or ammonia production rate slowed. It's also completely possible that your test kit is way off.

It's my understanding that the metabolic pathway for ammonia uptake will be more or less the sole N pathway being used until ammonia is not readily available, at which time the enzymes for assimilating nitrate will be produced or activated. Nitrate is converted into ammonia by the metabolism of the plant in order to be used to synthesize proteins. It makes sense for the plant to use less energy and skip the conversion if the intermediate product is available in the environment.

That brown algae is likely diatoms and is very common in new aquariums. It generally goes away on it's own.
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post #3 of 9 (permalink) Old 12-25-2010, 10:10 PM
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All plants require light, nutrients & CO2... The quantity of uptake depends on the light intensity.

Having ottos or snails would help with the algae.


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post #4 of 9 (permalink) Old 12-26-2010, 03:54 AM Thread Starter
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I just bought my test kit a month ago and its always been giving me good readings. I just want to be sure that I'm cycled because supposedly there has to be a large amount of nitrates and I'm not seeing that. I'll give it a couple more jays then. I just don't want tio add fertilizers and see a infestation of algea
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post #5 of 9 (permalink) Old 12-26-2010, 03:58 AM
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If there's a lot of plants in your tank you likely won't see much nitrate. In a heavily planted tank there likely won't be any detectable nitrates unless you dose them.
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post #6 of 9 (permalink) Old 12-26-2010, 04:48 AM Thread Starter
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I dont think mine is heavily planted, take a look.


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post #7 of 9 (permalink) Old 12-26-2010, 06:25 AM
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I wouldn't call that heavily planted either.

Where does the ammonia come from? Did you add it to the tank, use a substrate that leaches, toss in a dead fish or fish food? I don't see any livestock in the tank.
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post #8 of 9 (permalink) Old 12-26-2010, 02:10 PM Thread Starter
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The tank has been cycling. I add ammonia to it everyday to keep the bacteria alive. substrate is eco-complete, and yes there is no fish yet but hopefully soon.
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post #9 of 9 (permalink) Old 12-26-2010, 10:42 PM
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Skip a day on the ammonia and see if the nitrates go down.

FWIW 10ppm nitrates is nothing.
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