What is causing my brown algae, and how to get rid of it?

  • We are currently upgrading MFK. thanks! -neo

Christian B Staller

Feeder Fish
MFK Member
Jan 31, 2018
9
0
1
Southern California
I change my water (50%) about every 1.5-2 weeks, and the chemistry and clarity is excellent. Temp is 75, and PH is about 7.5. 125 Gal, Planted...and all except my fast growing Pennywort is growing this brown looking algae. I see it forming on the glass after about a week and you will notice round looking bundles on the heater, some tubing, and even the ends of the sword leaves...Is it Black Algae? The bundle/balls that collect on the hoses and heater are not easy to remove...and it doesn't scrape off the leave easily or with out destroying them. I don't really want to 'bleach' the plants...but I am not sure what else to do.

I have an Fluval FX4 Filter plus a C4 HOB and a large UV sterilizer as well. Lights are on for 8.5 hours...CO2 system is on about 1.5 hours before day light cycle and off 1 hour before they go off.

Thanks for the help community...I also uploaded pictures in case this helps identify the culprit. I am honestly not sure what this is...but it is all over my plants...and on the swords over time the leaves start to decay or come apart.

20181030_105646.jpg 20181116_164049.jpg 20181125_142251.jpg 20181125_142227.jpg
 
I change my water (50%) about every 1.5-2 weeks, and the chemistry and clarity is excellent. Temp is 75, and PH is about 7.5. 125 Gal, Planted...and all except my fast growing Pennywort is growing this brown looking algae. I see it forming on the glass after about a week and you will notice round looking bundles on the heater, some tubing, and even the ends of the sword leaves...Is it Black Algae? The bundle/balls that collect on the hoses and heater are not easy to remove...and it doesn't scrape off the leave easily or with out destroying them. I don't really want to 'bleach' the plants...but I am not sure what else to do.

I have an Fluval FX4 Filter plus a C4 HOB and a large UV sterilizer as well. Lights are on for 8.5 hours...CO2 system is on about 1.5 hours before day light cycle and off 1 hour before they go off.

Thanks for the help community...I also uploaded pictures in case this helps identify the culprit. I am honestly not sure what this is...but it is all over my plants...and on the swords over time the leaves start to decay or come apart.

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Hope this will help until a experienced member chimes in.https://www.monsterfishkeepers.com/forums/threads/brown-algae-easy-fix.682001/#post-7674080
 
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