With its full, green leaves, the Java Fern does well in almostany freshwater aquarium. It's hardy enough for a first-time ownerand can be planted alone or in groups-tank space permitting. Water changes: Test water weekly to assess water quality. It is recommendedthat 10% of youraquarium water be changed per week. At the veryleast, 25% of your aquariumwater should be changed per month. Foroptimal health, regular water changes not only prevent theundesirable accumulation of excess nutrients, but also removeexcess nitrates and waste products of the fish and plants. Aquarium placement: Place your aquarium in a low-traffic area, away from directsunlight and drafts. Planting your natural aquarium: Foreground plants: Usually stay very short and help fill in the front part of theaquarium. Middle ground plants: These plants grow anywhere form 4-10 inches tall. Background plants: These are the fastest-growing and tallest plants. Things to watch for: Poor growth Brown spots on leaves Plants appear weak, pale green to yellow, stems have fewleaves Plants cease to grow and die off Stem plants have long internodes and small leaves If you notice any of the signs described above, check youraquariumwater quality and consult an in-store AquaticsSpecialist. Size: Small. Color: Green.