I have a Fluval flex 15, so the lights are just the stock lights and I supplement with Flourish Potassium and Excel a few times a week. The substrate is the Fluval shrimp stratum. Just wondering what my Amazon Sword could be lacking? Or if it normal to be that shade of dark green? My other amazon sword seems to be doing amazing and is a beautiful shade of green. Lol I am new to plants and just wondering what might be going on. The first picture is of the mini sword, and the second is of my regular amazon