Ogre I've looked at the Flourish Comprehensive myself before and didn't know if I should be adding that instead of, or maybe in addition to the Flourish Excel I already do?
The plants you have are all low light, slow growers so with heavy-ish stock, light planting, and regular water changes you might not need ferts at all.
My anubias throw up new leaves every couple of weeks on average, but I'm dosing the comprehensive 3 times a week for the swords and stems.
The Excel is the liquid CO2 supplement, and unless you have a lot of light and a really low bio load I'm not sure that you need it (I've never used it so this is purely opinion on my part).
Although I've read that it's also a bit of an algaecide in addition to the CO2 boosting so that might be worth it.
JMJ99:
I noticed that your swords are closer to the corner of the tank and your bulb mostly provides light to the center of the tank.
You might want to move the swords closer to the diffusion area under the bulb, and your watersprite can float if you need to get it closer to the light although this will shade the plants on the bottom of the aquarium.
