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post #1 of 7 (permalink) Old 01-21-2014, 02:18 AM Thread Starter
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ID this algae

Can someone ID this algae on my DHG, also at the root area of the phoenix moss. Is it BBA or BGA? Does looks like fuss algae because it is black instead of green color. If it is BBA, should I cut them off? If spot dose Excel, it will also kill the hairgrass for sure. Will the hairgrass grow back after?

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Last edited by mheat; 12-28-2014 at 06:04 PM.
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post #2 of 7 (permalink) Old 01-21-2014, 04:20 AM
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Black hair algae.
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post #3 of 7 (permalink) Old 01-21-2014, 03:37 PM
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Duck Weed

I was having a horrible time with BBA in one of my planted set ups. I added Duck Weed and the BBA all be disappeared after a couple weeks. There is a little on a rock but none on any of my plants and it has stayed that was now for over a year.

Excel works grate on spots but if you cant target the root of the issue it will just keep coming back over and over :/


The only issue with duck weed is if you have the out flow of your filter above the water line, it can push the duck weed down into the filter. Also you will have to remove it it regularly or it will cover the entire surface but its easily manageable with a few scoops of your hand.
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post #4 of 7 (permalink) Old 01-21-2014, 04:03 PM Thread Starter
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Adding duck weeds to cut off some light. I use to have some duck weeds, but it block my surface skimmer all the time, so I removed them. I am planning to block some light from my LED light, instead of increase the CO2 injection.

I have some Amano shrimps inside the tank, but they don't eat BBA, I think. If it is black hair algae, they will eat them. The black stuff on the Phoenix Moss is the dead cell of Blue-Green-Algae. I did a 6-day Erythromycin treatment to kill them off last week. Then I have this Black Hair algae or BBA outbreak.
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post #5 of 7 (permalink) Old 01-21-2014, 07:49 PM
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That's BBA. I think BBA is a sign of either low or fluctuating levels of co2. Spot treating with excel kills it, but to keep it away I would increase the co2. I've spot treated hair grass with excel and never had any problems at all. Just do a little bit every day to be safe

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post #6 of 7 (permalink) Old 01-22-2014, 11:27 AM
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I have Amano, MTS, Rabbit Snails and Ottos. None of them touch bba unless it has been killed first with excel.
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post #7 of 7 (permalink) Old 01-22-2014, 04:32 PM Thread Starter
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I trim those plants with BBA. They are mostly found at the front with strong water flow (just under the outlet of my AC30). I am going to cut some light instead of increase my CO2 because my plants don't need high light.

Last time I spot treated BBA with Excel on my driftwood and rock with good result. But when I use Excel on DHG, DHG and BBA both die a few days later even with small amount.

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Last edited by mheat; 12-28-2014 at 06:04 PM.
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