There are a ton of E. cultivars out there. I have like 4, all with fancy names, but I personally can hardly tell them appart.
So, as with any sword in innert substrate, I would use root tabs when first planted and then once in a while and let it be (they dont handle replanting too well).

 

Lol, I tend to pick distinctive swords, so I can sure tell mine apart. Swords were my first foray into colorful plants.

My EcoComplete (actually mixed with FloraMax) is only a year and a half old, and got a refresh with an additional 20lb when I relocated the tank 3 months ago and decided to build up the back slope, so I haven't started adding tabs yet, though I know that will come.

 

Eco-Complete is an innert substrate, regardless of what it says on the bag. It has no nutrients your swords need.

 

If your other swords are growing fine, the new one should be okay... But with all the swords I've ever grown, they are the first plants to tell me my root tabs are no longer doing the job and it's time for more. Because you're only dosing flourish and excel, you should look into some sort of tab with at least P and K. Don't bother with expensive planted tank tabs, they work great, but for the same cost you can have 100+ diy tabs that work fairly well. If you have access to mono-ammonium phosphate and muriate of potash you can make some decent tabs up. If not, find some osmocote plus and some size 00 gel capsules. With eco comp and only flourish/fish waste those swords are bound to be asking for more....

 

I can actually get osmacote gel tabs, and have been considering getting some since I've been planting a lot more heavy root feeders this past few months. I went from 3 small swords to 8, and two of the new ones will get reasonably large, plus the val stand is humongous.

Do I just do 1 capsule per sword?

 

I kept "aflame" for several years and it looked awesome in my tank. I found that with higher light and co2 the colors really intensified and the leaves got a bit bigger. I never gave it root ferts, just EI dosing in the water column. I also had eco-complete/flourite sand mix for a substrate. It was never a difficult plant for me to keep, but seemed to really prefer a high tech setup.
Unfortunately I had to break down my tank for a move and gave my plants to a friend for safekeeping... none of them survived. When I get back into aquariums this will be the first plant I look for, it's absolutely stunning when happy.