1. Mar 29, 2011 #1
   

   sblomgren Well-Known ReefKeeper

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   So in my sump I have black algae growing. Is this because of low flow and poor lighting? I know I need to change my filters in my RO but it seems like it is increasing quickly. Thanks

    
2. Mar 29, 2011 #2
   Marion

   JB Veteran Reefkeeper

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   Marion

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   Are you sure it's not mold/mildew?

    
3. Mar 30, 2011 #3
   West Des Moines, IA

   Bud Loves Bacon Website Team Board of Directors Leadership Team GIRS Member Vendor

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   West Des Moines, IA

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   I had an outbreak of Dinos in one tank because of snow melt spiking the water quality and a bunch got through my RODI right before the TDS started coming up. The TDS still read zero but the water smelled funny, though I didn't notice. I had a bunch of gooey brown/black globs in my sump. Is that what you're getting?

    
4. Mar 30, 2011 #4
   

   cowdust9 Well-Known ReefKeeper

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   i had some black looking algae grown in my sump too and i just added some nano pumps and maxi jets and took care of issue after about a week