Java Fern Vs Amazon Sword: Which Plant Is Best For You?

Accompanying Articles 🌿 My Accompanying Article For This Video - https://glassboxdiaries.com/java-fern... 🌿 The Fish Poop Fertilization Method - https://glassboxdiaries.com/fish-poop... 🌿 Echinodorus Bleheri “Amazon Sword” Care Guide - https://glassboxdiaries.com/plant/ech... 🌿 Microsorum Pteropus “Java Fern” Care Guide - https://glassboxdiaries.com/plant/mic... 🌿 Check Out The FREE TOOL I Made To Help You Find The Perfect Plants For Your Aquarium - https://glassboxdiaries.com/lowtechpl... 📱 Socials - https://glassboxdiaries.com/socials Java Fern Vs Amazon Sword: Which Plant Is Best For You? In today’s video, I’m comparing two of the most popular aquarium plants in the hobby: Java Fern (Leptochilus pteropus, formerly Microsorum pteropus) and the Amazon Sword (Echinodorus bleheri). These plants are classics in freshwater aquariums, and I currently keep both in my 40-gallon tank. My Java Fern is attached to the hardscape on the right side, while my Amazon Sword is planted in the back corner. They’re often recommended to beginners, but in practice they behave very differently, so I wanted to share my experiences with both and hopefully help you decide which one is right for your setup. Let’s start with a quick overview. Java Fern is native to Southeast Asia and is usually found growing attached to wood or rocks, often above the waterline during the dry season and submerged when water levels rise. It’s considered an epiphyte, meaning it doesn’t need to be buried in substrate and does best when attached to hardscape. Amazon Sword, on the other hand, comes from Central and South America, and it grows into a large rosette-style plant with big, broad leaves. It’s usually planted directly in the substrate, and although there’s a long-standing myth that it requires nutrient-rich soil or heavy root tabs, the reality is that Amazon Swords can absorb nutrients both through their roots and their leaves. They’re adaptable, hardy, and truly one of the easiest background plants to grow. When it comes to care, both species have similar requirements. They’ll do well under a standard LED light, they don’t require CO₂ injection, and they thrive in typical tropical temperatures around 22–28 °C (72–82 °F). While both are often sold as beginner-friendly, I’d actually place them at different difficulty levels. Amazon Sword has always been reliably easy for me, whereas Java Fern can be unpredictable. Sometimes it grows beautifully in low-tech tanks, and other times it melts back or struggles for no obvious reason. After some trial and error, I’ve noticed Java Fern seems especially sensitive to potassium deficiencies and poor water flow around its rhizome. If the plant grows too dense and blocks circulation, it often declines, so trimming and potassium supplementation can make a big difference. Growth rate is another key difference. Java Fern grows slowly to moderately, often reaching leaf sizes around 30 cm (12 inches) but rarely taking over a tank. This makes it an excellent choice for aquarists who want a lower-maintenance plant that doesn’t require constant trimming. Amazon Sword, by contrast, grows much faster and can reach up to 50–70 cm (20–28 inches) in height if left unchecked. It makes a dramatic centerpiece in medium to large tanks, but it can easily overwhelm smaller setups if not trimmed regularly. The good news is that there are many smaller Echinodorus varieties—such as Red Diamond or Reni—that stay more compact while keeping the same classic Amazon Sword look. Both plants are compatible with fish and shrimp, offering broad leaves that provide shelter and sight breaks, helping to reduce aggression in community tanks. However, they can also overshadow smaller plants nearby. Java Fern is less of a problem since it grows slowly, but Amazon Sword can quickly shade out midground or carpeting plants if not maintained. In terms of water parameters, both tolerate soft to moderately hard water without issue. They can survive in harder water too, but extremely high carbonate hardness (KH) may cause problems over time. Availability is rarely an issue either—both plants are commonly sold in fish stores, online, and through hobbyist swaps. In my area, Java Fern tends to cost a little more than Amazon Sword, likely due to its slower growth rate, but both are affordable options for aquascaping. So which one should you choose? If you want a dependable, fast-growing plant that fills out the background and can serve as a centerpiece, I recommend Amazon Sword. It’s easier, more reliable, and makes an immediate visual impact. #aquarium #fishtank #fishkeeping TIMESTAMPS 00:00 - Intro 00:30 - Plant Introductions 02:40 - Care Requirements 06:05 - Beginner-Friendlyness 08:32 - Water Hardness 10:08 - Planting Options 11:24 - Growth And Size 13:12 - Compatibility 14:38 - Cost And Availability 15:15 - When To Choose Each Plant