I'm new, so take everything I say with a grain of salt, but hopefully any of the vets can back me up or correct me😁
Here's a few things that I noticed, that may help. You said you have scarlet temple, amazon sword, and Christmas moss. Both the scarlet temple and Amazon sword are root feeders, so won't use a lot of what is in the water column. So, what you're dosing would have to be used up by the Christmas moss. I would get some root tabs, and just put a couple under your sword and temples.
From personal experience, I thought amazon swords didn't grow all that fast (no matter what the internet said) because the one I had took 6 months to grow 3 inches. Replanted in my 55 gallon with root tabs (and ez green for everything) and it tripled in size in about a 6 weeks and is sending out runners👍
Thing 2: from the way you described your light setup in guessing you have a fluval plant 3.0 (or 2.0). Those light are fantastic, i love mine, but they put out more light than I could ever use. My 55 gallon is 21 inches deep and if I go above 70% I start getting algae. Since your bow front is about 17" deep cut the light down a bit...start at 50-60%. If you want more light for watching your fish, set it to where you want...it'll be fine for an hour or two. Also, don't know if it is true or not but I've heard that the 3.0's blue lights can help cause algae. Haven't tested that, but cut mine off to be safe and everything is still growing great.