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Old 09/30/2017, 08:59 AM   #1
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Location: Southern California (Inland Empire)
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Evo 13.5 tank Green Hair algae outbreak

I have a major issue with green hair algae in my Evo 13.5 G tank. Tried taking as much out but they keep on coming back.

Any suggestions? Can't put a particular fish in the tank since the tank is pretty small. Any clean up crew tgat would eat this up or?

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Old 09/30/2017, 09:10 AM   #2
rusty idaho
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what type of lighting do you run? i had the same thing 2 years ago. I dropped my light output to 4 hours a day and it helped. then found out my t5 bulbs were putting out wrong spectrum/wavelength of light. changed bulbs, did a FULL cleaning of the tank (did cause a cycle but i was ready for that) and it hasnt came back.

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Old 09/30/2017, 09:18 AM   #3
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I'm running the stock led lights. I did add two strips of blue leds rated at 460nm - 463nm and 14W both strips.
My stock blue/white led runs 9hrs and the blue led bars run 1hr before and 1hr after the stock lights turn on/off.

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Old 09/30/2017, 10:54 AM   #4
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Have you tried lowering you phosphate to almost zero and up your WCs? You have to starve out the algae and maintain the tank that way.

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Old 09/30/2017, 04:18 PM   #5
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Are you running the stock filter media? If so, that sponge could be a nitrate factory

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Old 10/27/2017, 05:40 PM   #6
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I've had no GHA on mine, I do have a nasty slime issue though. I sometimes add GFO to a little carbon bag I place in the chamber after the skimmer. I check phosphate with the Hanna checker and it always reads at or close to zero.

Are you using RODI water? In a previous tank I used to have alge issues all the time until I started using RODI water.

I also have a macro algae in the display that I like to out compete the ugly algae.

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Old 11/05/2017, 09:50 AM   #7
Indiana Reefin
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I would look into either a GFO reactor or dosing NOPOX by Red Sea. I am going to start doing 1ml of NOPOX in my 18 gallon. I am fighting nitrates and phosphates at the moment and my tank looks rough. I moved my tank 2 times over the past couple of months and I caused a tank crash. I am trying to get it back in control.

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