Hello everyone. I added a Space Invader to my tank several months back. It's growing and extends sweepers nightly but over the last several days, I've noticed the edges are turning brown. This is the first time I've owned a Space invader and not sure if this indicates too much light, not enough light, flow issues or possibly something they just do when growing. I've closely inspected and see no pests. In the attached picture it is deflated more than usual. Everything else in tank is thriving and I've had zero swings in params or no changes to lighting or flow. I included a full tank shot to show location of Space invader. Any help is greatly appreciated.