Sounds like besides a few things you've got this handled! Everyone is giving you the same info I would so no reason to reiterate it. You've kept her for 6 years I wouldnt change to much.
Good job!
Welcome!
As mentioned by the others keep a balance diet, feed every other day, feed with carnivore sinking pellet, tilapia fillet, silver sides and raw shrimp.
Keep lid tight as possible since polys are scape artist.
There are a lot of ideas for scaping in one of the stickies at the top about enclosures pics.
I find that mine really enjoy the plants, but not everyone wants to do live plants. You can see my tank in the "udon, soba, and the noodles" thread, too.
I appreciate you seeking out better information for your Sen! I bet she'll appreciate the better diet and you might get a little more growth with it.