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Black fuzzy fungus?

This is a discussion on Black fuzzy fungus? within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> Its a twenty gallon high. I'm sorry about not being more specific about the bulb specs as it came with the hood and the ...

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Old 04-28-2013, 09:37 PM   #11
 
Its a twenty gallon high. I'm sorry about not being more specific about the bulb specs as it came with the hood and the box was not very forthcoming as far as info on said bulb but it is a T8. I'm almost certain it's hard water as there are lots of minerals in the water and the water source has minerals deposits nearby but don't know how hard. I will try to contact the water and sewage authority tomorrow to get the specifics. Should I add more plants to help with excess nutrients in the water?
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Old 04-29-2013, 11:49 AM   #12
 
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Originally Posted by Freyja View Post
Its a twenty gallon high. I'm sorry about not being more specific about the bulb specs as it came with the hood and the box was not very forthcoming as far as info on said bulb but it is a T8. I'm almost certain it's hard water as there are lots of minerals in the water and the water source has minerals deposits nearby but don't know how hard. I will try to contact the water and sewage authority tomorrow to get the specifics. Should I add more plants to help with excess nutrients in the water?
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More plants will always improve things, as algae will have to struggle more with the competition. But this only works so far, if something is out of balance. And, several of the named plants are stem plants which are fast growing. Aside from the algae, are they doing well?

In summary, the light is a T8 tube, over a 20g high (normal) tank, on 10 hours. Flourish Comp added once a week. And we'll assume the GH is sufficient for the hard minerals.

If the water is quite hard, algae will be more likely. And with the light on 10 hours, some other nutrient might be missing. I would still suggest reducing the light duration to 8 hours (with a timer). Give this a few weeks. This algae should stop increasing, that is the key; what is there will not go away, but if it doesn't spread, you've solved the issue.

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Old 04-29-2013, 12:07 PM   #13
 
Thank you Byron for your input. I will purchase a timer within the next day or two. I am also in the process of getting more plants, including fast growing plants.
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