Green Spot Alge

[BigIan]

right i have a high tec planted tank, with 2.5 wpg, ada As substrate, dosing with E.I and Co2

Yet i keep getting a LOAD of green spot alge in my tank, i keep upping the co2 and it still re appears every week...

What am i doing wrong?

 

[JamesC]

Low phosphate levels. What is your EI dosing regime?

James

 

[George Farmer]

Where is it? On the plants or glass?

As James suggests, more KH2PO4 may be the answer.

 

[plantbrain]

Probably more likely low CO2.

GSA means things are okay so bump the CO2 up a tad and add more PO4 if you want to, EI should provide enough although adding more is fine also.

Regards,
Tom Barr