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post #1 of 10 Old 06-09-2012, 09:43 PM Thread Starter
Blue-Green Algae

Ok so i posted before about my new 55 gal that being infested with blue green algae. So i followed all the tips:
decreased light an hour a day
left lights off for a week
lowered feeding
cleanings out more than half the water in a water change
did mini cleanings in between larger cleanings
manually removed clumps of the stuff
All in all, it seems to actually have gott much much more. Soooo this tank has been established for about half a year so what now?
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post #2 of 10 Old 06-10-2012, 07:35 PM
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We are certain this is cyanobacteria? Sorry, but with so many threads and PM's I can't keep them all in my mind. Cyanobacteria is organics-related, but once it has taken hold it is difficult to keep away, as it is quick to return initially, but with persistence over several weeks (up to 3 months) it can be beaten.

All I suggest is very thorough cleanings--filter, substrate (even if planted), water changes. I haven't tried these plants, but both Egeria densa (Elodea) and Ceratophyllum demersum are said to severely inhibit cyano because they naturally release substances that attacks cyanobacteria.

The treatment sometimes suggested using antibiotics i donot recommend as this obviously kills various bacteria in the filter and substrate beyond the cyano, and some antibiotics will kill plants. Plus the fish should never be subjected to antibiotics except to deal with a fish-related bacterium.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 10 Old 06-12-2012, 10:38 PM Thread Starter
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We are certain this is cyanobacteria? Sorry, but with so many threads and PM's I can't keep them all in my mind. Cyanobacteria is organics-related, but once it has taken hold it is difficult to keep away, as it is quick to return initially, but with persistence over several weeks (up to 3 months) it can be beaten.

All I suggest is very thorough cleanings--filter, substrate (even if planted), water changes. I haven't tried these plants, but both Egeria densa (Elodea) and Ceratophyllum demersum are said to severely inhibit cyano because they naturally release substances that attacks cyanobacteria.

The treatment sometimes suggested using antibiotics i donot recommend as this obviously kills various bacteria in the filter and substrate beyond the cyano, and some antibiotics will kill plants. Plus the fish should never be subjected to antibiotics except to deal with a fish-related bacterium.
hmm ok. should i increase the amount of water i change AND the number of times I clean in a week?
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post #4 of 10 Old 06-13-2012, 11:09 AM
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hmm ok. should i increase the amount of water i change AND the number of times I clean in a week?
To get this under control, probably a good idea to do more frequent cleanings. All else being equal, a 50% water change weekly should be sufficient.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #5 of 10 Old 06-13-2012, 09:06 PM Thread Starter
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To get this under control, probably a good idea to do more frequent cleanings. All else being equal, a 50% water change weekly should be sufficient.
will do. I also left out about 5 gallons to allow more water flow from the filter. I also am adding Elodea to the tank to help the algae war effort.
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post #6 of 10 Old 06-14-2012, 10:32 AM
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will do. I also left out about 5 gallons to allow more water flow from the filter. I also am adding Elodea to the tank to help the algae war effort.
Hornwort is another plant said to be toxic to algae, as it mentions in the profile. I realize cyano is not algae, but it may help.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #7 of 10 Old 06-15-2012, 09:31 PM Thread Starter
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Hornwort is another plant said to be toxic to algae, as it mentions in the profile. I realize cyano is not algae, but it may help.
good idea! the only concern i have with that is that in my show tanks, i cant seem to get hornwort to work on those tanks and i fear that in this tank that im already having trouble with, will yield heavy shedding with the leaves that could further damage the tanks.
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post #8 of 10 Old 06-16-2012, 01:16 PM
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good idea! the only concern i have with that is that in my show tanks, i cant seem to get hornwort to work on those tanks and i fear that in this tank that im already having trouble with, will yield heavy shedding with the leaves that could further damage the tanks.
Good point.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #9 of 10 Old 06-21-2012, 08:45 PM Thread Starter
hmm the war against the algae seems to be...neutral. Nothing has changed...if anything worse... I just aded anacharis to the tank so i will see what happens now... I also added glossostigma to the tank for reasons im not sure of.
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post #10 of 10 Old 06-30-2012, 05:20 PM Thread Starter
The wars still goes on and still no end to this awful algae. uuuuuuuuuuuuuuuuuuuuuuuuuuuuhgggggggggggggg
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