Thanks for your reply... The fish do hate me! I've been running 6.4PH with 6KH - had some loses, drop checker has shown light green

The reason for asking about algae is I have an algae problem of which I'm trying to find root cause, surely the amount of carbon produced, if not being utilised by the biomass would give algae an essential ingredient? I have a 1.5wpg...

Many thanks