You have 3-4 species growing in there, that means you have several issues happening.
The brown stuff is diatoms and maybe a green algae, filamentenous diatoms. The hairy stuff is green hair algae and you have some BGA as well.
You need to be agressive and remove as much as you can with your fingers, rub it off etc, prune if you must, disturb the gravel good, vacuum up any left overs, do a large water changes after this.
Make sure you have good CO2, EI will do fine but the CO2 needs to be cranked up and you need to stick with the dosing and CO2 for 2-3 weeks really good.
Attack the algae before it gets worse if it starts to grow back, after a few times of this and staying on top of it, this issue should relent.
Open space not planted is a great place for algae to grow if you are having issues, thin out the weeds later.
Rub off the preen the plants good, followed by large water changes. You might need to do this 2x a week till the algae backs off.
Dose nutrients after.
BGA looks somwhat mild and may not need the blackout of a antibiotic.
Correct conditions and see later if that is needed, with good cleaning, clean the filter as well, net any dead leaves, muck etc, that should take care of things.
Skids,
Folks see Cladophora if they stop dosing, or don't dose enough to a well run tank. Every time I leave and don't dose for a week or more, I have lots of Cladphora when I get back, I clean it out good, stay on top of dosing/CO2, water changes,. it's not an issue.
Over the years I've done this maybe 5
so it's old hat.
You just need to be agressive and manually remove it well, then do the water change and stay on top of things for 1-3 weeks.
Few algae can withstand that.
Regards,
Tom Barr