Dark Blue Green Algae in 2.5! - The Planted Tank Forum
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post #1 of 4 (permalink) Old 08-26-2004, 04:52 PM Thread Starter
Algae Grower
Join Date: May 2004
Location: Forest Lake, MN
Posts: 30
Dark Blue Green Algae in 2.5!

I gave my Betta a new flour. 10 watt light bulb in his 2.5 gallon. I also added 2 Anubais plants. His light is on for about 12 hours, and I think that it's to much light. There is a bunch of dark blue green algae growing on the plants and the gravel, and the glass. What is it and how can I get rid of it? There is a algone packet in there, so his specks are great. Please help Fred. My edit is that I feed Fred once a week, some frozen brine shrimp. This is all he will eat and the only time he will eat....I got a picky, bottom feeding Betta. I also do a 75% water change weekly to fight the algae and to replenish fresh water in such a small tank. The filter is a Whisper (not the best by any means) and I shoved a algone packet in there with it. I don't have a phosphate test...could this be it?!

75G Empty
20G Planted Empty
7G Betta

Last edited by Mussa888; 08-26-2004 at 05:08 PM. Reason: Forgot some things!
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post #2 of 4 (permalink) Old 08-27-2004, 02:23 AM
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Join Date: Jun 2004
Location: Seattle,WA
Posts: 190
I had the same problem with my beta tank.

Last weekend I decided to change the gravel and added a stem of Wisteria(Hygrophila difformis). Until now, no BGA.

Another thing is that BGA appears on a low nitrate situation. Iím not sure about algone, but I think that alogne removes nitrate. If that is the case it makes things worse unless you have a very high nitrate level, above 10 ppm.
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post #3 of 4 (permalink) Old 08-27-2004, 05:44 PM Thread Starter
Algae Grower
Join Date: May 2004
Location: Forest Lake, MN
Posts: 30
Thanks...Algone removes all Nitrates, Nitrites, Ammonia...It works great in my 20L, but my 2.5 is struggling. I'm going to try and remove the substrate and wash it and try again.

75G Empty
20G Planted Empty
7G Betta
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post #4 of 4 (permalink) Old 08-28-2004, 04:40 AM
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Join Date: Sep 2003
Location: Somerdale, New Jersey USA
Posts: 216
How long has the tank been up and running?
A 2.5 is really not much different than any other size tank, in that it needs time to mature, and for the plants to get established.
IMO, tearing up the substrate is not going to solve your problem.



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