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05-15-2006, 10:29 PM
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#1 |
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Fishy Member
Join Date: Aug 2005
Age: 46
Posts: 25
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brown algae
Hi,
I just purchased a 55 gallon with fish and whole setup. It had all been an established setup with a large angel fish and 3 smaller ones, 4 lamp eye tetras?, 2 glass fish, about 8 mixed fruit tetras, 3 cories, 4 danios, and 1 one other unidentified fish that has a black stripe horizontally across the middle of its body. Anyway, when I got the tank, I kept about 35 gallons of the old water and the same filters (an Aqua clear 300 and another Aqua clear 200). It also has 2 power heads. My question is this - about 2 weeks into running, the tank has been getting some brown algae on the rocks and a little on the glass and some decorations. I did about a 15 gallon water change - any suggestions? Is the tank going through the cycling process again even though I basically kept the setup as it was? thanks in advance, Gary |
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05-15-2006, 11:22 PM
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#2 |
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Senior Member
Join Date: Jul 2005
Location: Johns Creek, GA
Posts: 3,621
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If you didn't clean the filters or replace the gravel, the worst case is a "mini-cycle", where some of the bacteria died off when things were off and it takes a little while to get them back up to normal levels. You shouldn't have to start from scratch and by two weeks, the mini-cycle should be over. If you don't have live plants, changing water to lower the nitrates should reduce the algae by removing its food supply. Did the light level on the tank change? Brown algae is usually associated with lower light than green algae.
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05-16-2006, 07:05 AM
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#3 |
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Fishy Member
Join Date: Aug 2005
Age: 46
Posts: 25
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I did not replace the gravel or change the filters and there was little "down time" between setups. I'm not sure how much the lights were kept on before, but I was planning to keep them on longer than I have been. There are no live plants currently. Thanks for the advice so far............
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05-16-2006, 02:47 PM
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#4 | |
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Super moderator
Join Date: Jan 2005
Posts: 2,095
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Quote:
__________________
If you have a big enough tank with enough hiding places, pH of around 7, you can keep virtually any fish together as long as all the fish are around the same size and these two groups of fish are avioded: Serrasalmus Tetradon(figure eights and dwarfs are the exception). I keep a successful community of fish in a 4 foot tank including the following families: Cichlids, tetras, loaches, gouramis, barbs, rainbows, livebearers, killiefish, catfish, puffers. |
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05-16-2006, 04:16 PM
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#5 |
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Aquatic Naturalist
Join Date: Jan 2005
Location: Dayton, Ohio
Age: 32
Posts: 14,976
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If by "downtime" you mean the tank was empty for more than a day, your tank is cycling again. Brown algae is normal and will recess once the tank is balanced again. Just remove what you can and wait it out. It doesn't hurt anything.
__________________
For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow.  Member of the AGA (Aquatic Gardner's Association) Member of the IBC (International Betta Congress) |
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05-16-2006, 05:35 PM
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#6 |
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Fishy Member
Join Date: Aug 2005
Age: 46
Posts: 25
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Are there good algae eaters that would also help and mix well with the particular fish that I have in there already? The "downtime" was only a matter of a several hours between it's past "home" and the new one in my home.
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05-17-2006, 05:39 AM
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#7 | |
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Super moderator
Join Date: Jan 2005
Posts: 2,095
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Quote:
Even a few hours can make your filter unstable.
__________________
If you have a big enough tank with enough hiding places, pH of around 7, you can keep virtually any fish together as long as all the fish are around the same size and these two groups of fish are avioded: Serrasalmus Tetradon(figure eights and dwarfs are the exception). I keep a successful community of fish in a 4 foot tank including the following families: Cichlids, tetras, loaches, gouramis, barbs, rainbows, livebearers, killiefish, catfish, puffers. |
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