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Po4 5 too high

1K views 5 replies 5 participants last post by  JeffB 
#1 ·
Apparently my water supply is high in PO4. Have been fighting persistent algae in my planted tank. All other parameters seem fine.
PH 7.0
KH 14
No3 10
PO 4 5

How can I lower the PO4? I believe, (after weekly 50% water changes) that this is coming from my water supply.

Thanks for comments

---M
 
#6 ·
You need to raise your CO2 level to at least 30ppm. If you are not putting in CO2 you need to start. Also do a search on flourish Excel. When overdosing it can help control BBA.
 
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