"Triffid Farmer" wrote in message ...
If you use CO2, CO2 and NO3 are about 90-95% of the issue.

I believe I've got the NO3 sorted but I'm unsure about the CO2.
I thought I might have been overdoing it but I'm now thinking that it's not
enough.


What test numbers should I be looking to achieve, no just CO2 but the whole
lot.

K


Too much CO2 will not cause algae, but might cause fish stress. Too
little CO2= definitely algae issues will occur.

Regards,
Tom Barr