Amazon sword rose melon also known scientifically as Echinodorus grisebachii or E. amazonicus has become famous among aquascapers over the past few years. It belongs to Alismataceae family and it works best when grown in the background with its fresh green color. You will find this plant all over the world because of its durability and its ability to withstand an extensive temperature range.
The plant is native to the Amazon river basin. A very green, warm, and humid place caters to the highly nutritious substrate for healthy growth. Also, the plant is reported to be very tolerant of distinct weather conditions but make sure you provide a tropical climate in the aquarium for its healthiest growth.
In a healthy tank environment, the plant can grow up to 20 inches in height so a minimum 29-gallon tank will do good. The tank should be tall (16 inches minimum) so as not to hinder the growth of the plant but if you want to plant it in your smaller tank then it will need to be trimmed a lot. For the healthy and best growth of rose melon, you should maintain pH at 6 to 7 and 72 to 82 degrees F temperature. Although it can be grown in a broad range of temperatures it is better if you set its limit. Lighting should be from medium to intense for 10 to 12 hours daily. The substrate should be loosely arranged and with enough depth (minimum 2.5 inches) to hold roots. Optimal hardness for the water is best between 8 to 12 °dGH. The best aeration system is paramount for the growth of rose melon.
It can give your aquarium a thick forest look and will be great if you want to hide the aquarium heater and filter.