running gfo in mr1 by nextreef

reefnewb1982

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Hello guys im having a problem with phosphates i cant seem to get them to 0. Im running a ohosphate reactor with gfo and a uv sterilizer and a coralife skimmer. All of a sudden im having a crazy outbreak of green hair algae what did i do wrong how can i fix it ? My parameters are ammonia -0
Nitrite-0
Nitrate -0
phoshates -0.03-0.05
 

jcdeng

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put the output of gfo in an empty cup and collect enough water for the po4 test.

where are the HA growing mainly? if on rock then the rocks might be leeching out po4.
 

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