I black out could back fire on you with your tank at its early stage of development IMO. As the MC will have limited energy reserves ATM.
Reduce light intensity, check pH profile, clean filter and all pipework impeller as well, remove worse leaves esp if melting or holes.
If you can't reduced intensity add some floating plants.
Reinforce clean up crew
Ok cheers, didn’t think about that! Will give the tank a major clean tomorrow, will clear all the algae off the glass and rocks. Will then cut back all the bad leaves. I guess the algae will slowly die back? Is it just maturity and keeping the tank in check for the next month? I’m impressed with the plant growth so far, reckon another 4/5 weeks and I’ll have a full carpet.
Cheers Chris