Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Black algae (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/black-algae-16982/)

sinadyan 08-10-2008 11:22 PM

Black algae
 
Does hair algae turm black on plants? I am getting a lot of it on my plants. My nitrates are 40ppm . I have a 55 gal tank with a lot of sword plants and some wisteria, I am not overstocked, and my tap water test at 5ppm for nitrates. CF lighting is 130 watts kept on for 10 hours a day, I feed lightly once daily, when you black out a tank for 3 dats to kill algae do you need to cover it, or just leave light off? thank you on advance

Little-Fizz 08-11-2008 12:16 AM

If you have plants I probably wouldn't do a black out. But I had that algae.. I started just using my nail and taking it off the plants that way... But now its growing on my gravel.. So I'm interested to see what someone tells you.

PDXfishy 08-11-2008 03:56 AM

Are you talking about staghorn? If so, it can be easily removed with Flourish Excel, a CO2 fertilizer. You can spray it directly on the plants using a syringe or you can just overdose it for your whole tank. Kills a variety of algae really well - unfortunately it is also known to kill some plants and shrimp really well. Do your research first.[/code]

SinCrisis 08-11-2008 11:30 AM

wait a fertilizer will kill algae? I have the same back stuff on my plants that my otos seem to take a chunk out of once in a while. But it grows faster then the chunks ebign taken off so tis still a problem for me

okiemavis 08-11-2008 05:37 PM

The reason you've got so much algae is because your nitrates are 40ppm. They really should be kept under 20ppm, so I'd recommend doing more frequent water changes.

sinadyan 08-11-2008 07:18 PM

So if I do more water changes and get the nitrates down to 20 ppm or less the black algae will die and go away. or do I need to OD the excel, and if so , how much?

PDXfishy 08-11-2008 11:54 PM

First CONFIRM the algae type. There is an effective way of killing most algae, but messing with Excel can be very dangerous! Excel is not your standard fertilizer, it is organic CO2 (can be used to provide small tanks with CO2). It is known to kill some plants and possibly shrimps.

Here is an excellent page on algae: http://www.theplantedtank.co.uk/algae.htm

Elahrairah 08-12-2008 12:41 AM

I second Excel. I can't believe how well this stuff works.

I took the standard weekly amount to use and dosed 3x that for 3 days in a row. Algae all turned brown and died off within a week.

Only side affect was a huge plant bloom. When I pruned, I had more to dispose of then was left in the tank!

Best product out there for the $$.

Be careful to check side effects of your fish types.

sinadyan 08-12-2008 07:37 PM

I have mostly sword plants in my tank. My fish are Angels, platties, some glowkight, a pleco and cory. Is excel dangerous to any of these, Thank you for the help

PDXfishy 08-13-2008 12:34 AM

No, they should be fine. If there are only isolated outbreaks of algae, spot-treat the areas; if that would be too complicated, just double the recommended Excel dose and kill those suckers. BLAM! DIE, YOU $#%@#^, bwahaha!!! :twisted:


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