what is this algae? - The Planted Tank Forum
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post #1 of 31 (permalink) Old 04-29-2011, 05:02 PM Thread Starter
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what is this algae?

does anyone know what this algae is and what causes it? thanks!


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post #2 of 31 (permalink) Old 04-29-2011, 05:14 PM
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It's hard to see. Try taking the pic with a better light or with a flash.
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post #3 of 31 (permalink) Old 04-30-2011, 03:07 AM Thread Starter
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here is a better picture

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post #4 of 31 (permalink) Old 04-30-2011, 05:09 AM
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Interesting....

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post #5 of 31 (permalink) Old 04-30-2011, 05:12 AM
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brown diatom algae if it easily rubs off the leaves

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post #6 of 31 (permalink) Old 04-30-2011, 05:16 AM
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Quote:
Originally Posted by Capsaicin_MFK View Post
brown diatom algae if it easily rubs off the leaves
I doubt! as I had it once long long time back...specially if you have florite in your tank....you notice that!

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post #7 of 31 (permalink) Old 04-30-2011, 08:31 PM Thread Starter
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Quote:
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brown diatom algae if it easily rubs off the leaves
not diatom, doesn't not rub off at all.
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post #8 of 31 (permalink) Old 04-30-2011, 11:46 PM
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It is a red algae. The Marsilea is a bit stagnant and the old leaves are a great substrate for this algae, get it growing. Make sure there is water movement, CO2 and ferts available. Mine will get this if CO2 is low, suspect that is the usual cause. Haven't tried Excel on it yet, might work. Or might try H2O2 on it. I gave up on the plant formerly known as E. tenellus because of this algae.
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post #9 of 31 (permalink) Old 05-01-2011, 01:22 AM
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Looks like BBA to me.
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post #10 of 31 (permalink) Old 05-01-2011, 02:22 AM Thread Starter
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Quote:
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Looks like BBA to me.
definitely not bba


Quote:
Originally Posted by Kathyy View Post
It is a red algae. The Marsilea is a bit stagnant and the old leaves are a great substrate for this algae, get it growing. Make sure there is water movement, CO2 and ferts available. Mine will get this if CO2 is low, suspect that is the usual cause. Haven't tried Excel on it yet, might work. Or might try H2O2 on it. I gave up on the plant formerly known as E. tenellus because of this algae.
tried both excel and h2o2, none worked.
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post #11 of 31 (permalink) Old 05-01-2011, 02:27 AM
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Looks like the same stuff I used to get on anubias petite in a medium light tank. I ended up doing a bleach dip, which worked, though it did some damage. Unfortunately you don't have that option. I'd suggest making sure CO2 is readily available, or ripping out all the affected leaves and reducing lighting.
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post #12 of 31 (permalink) Old 05-01-2011, 08:53 PM
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I believe that it is the same algae that I have been fighting for the last 2 years. It also appears on the substrate.

Increased CO2 levels (pressurised), black outs, Flourish Excel, H2O2 don't touch it. Last Xmas, I did a complete strip down and bleached then boiled everything. All the plants were replaced but it made no difference, the algae was back in 6 weeks!

Having given you the bad news, now for the good news - it appears to be a form of bacteria like BGA, not a true algae. In desperation, I dosed the tanked for 5 days with Maracyn (Erythromycin) and it virtually cleared the tank after the fifth day. It has since come back, so I plan a longer dose to try and rid the tank of this algae for good. I hate using antibiotics, but nothing else appears to work.
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post #13 of 31 (permalink) Old 05-02-2011, 03:45 PM Thread Starter
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Quote:
Originally Posted by andyjw View Post
I believe that it is the same algae that I have been fighting for the last 2 years. It also appears on the substrate.

Increased CO2 levels (pressurised), black outs, Flourish Excel, H2O2 don't touch it. Last Xmas, I did a complete strip down and bleached then boiled everything. All the plants were replaced but it made no difference, the algae was back in 6 weeks!

Having given you the bad news, now for the good news - it appears to be a form of bacteria like BGA, not a true algae. In desperation, I dosed the tanked for 5 days with Maracyn (Erythromycin) and it virtually cleared the tank after the fifth day. It has since come back, so I plan a longer dose to try and rid the tank of this algae for good. I hate using antibiotics, but nothing else appears to work.
yes, that does look like what i have in the tank. fortunately for me, it seems to have somehow stopped developing. don't know for sure yet, i have to trim out all the affected old leaves to be sure. I am actually more interested in finding out the cause of it to prevent it from coming back.
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post #14 of 31 (permalink) Old 08-29-2011, 02:12 AM
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Any update about this algae? I believe I got this as well, though I thought it was BBA. But not sure.

Well the snail trap is not working. Maybe wrong bait. I did not have cucumber or cabbage at home so I put some banana instead but they all climb to the wall of the tank. Maybe they know it is a trap. Will try one more night and observe. This time with cucumber which is recommended. ~ CHUNTC
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post #15 of 31 (permalink) Old 09-19-2011, 09:32 PM Thread Starter
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it turned out to be some BGA type of algae, used EM in the tank per instruction on this thread
http://www.plantedtank.net/forums/al...d-algae-2.html
it has been a month i believe, plants are growing better, and i don't see any of this black stuff on MM or S repens anymore. Many thanks to Sara who helped identify them with her microscope.
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