beard algae

So far this is only presenting on my Vallisneria, who’s not growing very well. It’s been 4 months and it’s never put out new growth or runners.

I have a 35G tank that is 6 months old now: 15 Harlequin Rasboras, 9 Neon Tetras, 6 Amano Shrimps, 1 Assassin Snail. My tank is invaded by all sorts of algae; green, brown, hair, and it's everywhere brown and hair algae are covering my plants, green algae is on tank glass. I have DIY CO2, I cut...