We have a sword with leaves about 12 inches long and a small square of christmas moss on the ground that was planted 2 months ago. We'll probably have to wait about 1.5 - 2 yrs to cover the bottom of the tank. 2 Burmese loaches, 2 yoyo loaches, 2 skunk loaches and 2 zebra loaches and that one platy. We had a male killi in with her about 3 months ago but removed him (thinking that he was stressing her out).... But 3 months later she still looks like death. I guess I could try putting her in a different tank.... But a 120 seems like more than enough room for all the fish. Maybe I should get her a female killi friend and see if she gets any better... I'm ready to try anything at this point.