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To me it looks like you have both BBA and BGA. The black beard algae is the hairy projections and the slime/sludge reddish brown you see on surfaces and probably substrate is blue green algae. Even though it's called blue green algae it can definitely take on that red hue.

It's been quite a while since I've been in the hobby and battling algae so now sure what the recent modalities of treatment are, but I can tell you that it's nothing to be too worried about, just growing pains as a tank matures. You can temporarily hold back the BBA with small squirts of H2O2 while the filter and all water agitators turned off. You'll see it bubble and turn pink as it dies. I would refer to others who are more knowledgable about nutrient imbalances but more water changes and cleaning your filter and substrate to reduce the amount of organics is what I did in the past. Be careful to not nuke your filter by cleaning all media, just clean and rinse 1 of the mechanical filtration pads that has a lot of build up in tank water. Other than that you'd have to assess your lighting and fert dosing levels. You might have too much of both and not enough CO2.

As for the BGA, it's a real pain. I would physically remove as much as possible and then try a blackout for a few days. If that doesn't work you can look into treating your tank with antibiotics.

Hope this helps!
 
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