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Magenta / Burgundy colored algae over our live rock and sand

post #1 of 5
1/15/12 at 9:14pm
Thread Starter 

 

 

Hi folks,

 

In the last few days I have noticed algae has carpeted the live rock and sand in our tank 30 gallon Nano Cube.  We were able to do a few water tests:

 

Ammonia:     0.25

Nitrate:         0.20-0.25

PH:              7.5 - 8

 

 

 

 

I ran out of chemicals to test the other needs in the water column until tomm.

 

Any ideas what might be happening?

 

 

 

 

Thanks,

Todd

 
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post #2 of 5
1/15/12 at 9:18pm

Welcome to swf.....we need more info than that.

 

how old is the tank?  Do you have a picture?  Any fish in it?  what is the filtration you use?  Any powerheads?

 

etc   etc

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post #3 of 5
1/16/12 at 5:11am

Does it come off easily?  Sounds like Cyanobacter. 

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post #4 of 5
1/16/12 at 5:07pm
Thread Starter 

photo.JPG

 

We have two power heads, the filter system is three stage: it has carbon, it has a sponge and the bio matter.   

We have several fish.  The tank was setup in September of last year.

 

Thoughts??

 

TIA

 
 
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post #5 of 5
1/16/12 at 6:29pm

Looks like Cyano as well.  This is usually caused by a combination of insufficient waterflow and excess Phosphate.  Siphoning it out helps but the cure is to discover where the phosphates are coming from and to increase waterflow.

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