Yep, I don't usually suggest peroxide treatment for the more delicate plants as the treatment tends to just kill them outright. You don't really need the treatment if you find the source of the imbalance and fix it.
I loved going through this thread and enjoyed seeing all of the different planted tanks. I wanted to share mine as well. They are all located in my office/library, and I enjoying looking at them as I do my homework or computer related stuff. :)
I have two divided 10g tanks, one 5g, and one 6.6g (which sits in front of my desk). I love this new setup (and apparently, so does the cat!). Don't worry, she just likes to look, no touchy. I changed from a gravel to a mineral sand, and the plants have just taken off! The 5g and 6.6g are my newest tanks, which have only been up for a week or so. I just ordered a bunch of water sprite to fill in more on the 5g and 6.6g.
My Betta Boys: King (King), Marble (HM), Snoopy (Delta Tail). My Betta Girls: Emma (CT), Lucy (CT), Margie (CT), Thelma (VT), Louise (VT), Dorinda (VT). Staff: 2 otos, 5 SAE, and 5 Peppered Corys.