No boostnbuds, it's nitrAtes should be 10-20ppm.
I have 2 20 longs with 20 watts now, no CO2. Java fern is very slow to show growth, the "lace" kind is a bit faster. Both had new small leaves & plants but they are smaller than I've had before. Different house & water, maybe a different variety. Leaves were very large in less light but higher nitrates & GH.
Java moss I had trouble keeping alive over the years (well, looking good anyway). This last batch is green & growing well. Did yours look good when you got it? Is it brown with diatoms, does it come off?
The anubias will get diatoms (brown algae) but it should go away eventually. Do you still have the 1 oto? Might get him a couple buddies, they like diatoms. Water movement seems to help sometimes as does a little shade.
Anacharis always seemed like a dirt magnet to me so I don't grow it anymore. Again, try water movement.
Never had najas.
Mostly it sounds to me like diatoms, my tank with eco seemed especially effected for a long time. Water changes & a thin layer of filter floss (pillow stuffing from walmart) in the filter can help remove some.
Replacing your bulb is a good idea. I got mine at Home depot but it didn't tell the color spectrum on all so it took a while to decide.
I like crypts, but balansae doesn't seem to grow well for me.