Plant problems and layout problems are different questions, and both do better with a photo. For a plant that is melting, yellowing or going nowhere: Your light — what it is and how many hours a day. Most plant problems are a light-and-nutrient balance rather than a plant problem. Substrate and ferts , including whether you dose anything and how often. CO2 , or clearly that you have none. It changes which advice applies more than anything else here. How long the plant has been in . Melting in the first fortnight is usually a plant converting from emersed growth, not dying. For layout critique, post the photo and say what is bothering you about it. "What is wrong with this scape" gets a far more useful reply than "is it good" — the first is a question people can answer, the second is a request for applause. One house rule, and it is the only one that matters: answer the question that was asked, and say when you are not sure. A confident wrong answer costs somebody a fish.