![]() Maintaining the proper alkalinity prevents drastic pH swings, which in turn protects the health and safety of your Java Fern. If you drop down too high or low beyond that, you may notice your fern suffering a bit and exhibiting signs like browning leaves or stunted growth.įor saltwater tanks, you need to make sure you keep alkalinity of 3-8 dKH. Though java ferns can survive in a wide range of pH levels, ideally, this plant tends to enjoy pH levels between 6.0 and 7.5 to 8.0. Also read: Best Light Spectrum for Aquarium Plants PH and Alkaline Levels If you have an aquarium with high levels of light, your Java Fern should still be able to thrive, but you may have to prune its leaves more as they tend to go brown or transparent. Generally, 5000-7000 K bulbs work the best for the majority of tank owners. Many experts say that Java Ferns need around 1.5 watts of light per one gallon of water. If you believe your Java Fern is getting too much light, you can reduce the brightness with small incandescent bulbs or softer fluorescent ones. As a result, Java Fern is one of the most popular plants for those who have low-light aquariums. However, many fern experts say that Java Ferns are happiest in low-light levels. This (among other reasons) is one of the reasons why these ferns are so great for beginner planters even if you don’t have an experienced green thumb, it’s pretty hard to mess these tenacious guys up. That’s probably why so many aquarists argue about what kind of light Java Ferns prefer.īut what everyone can agree on is this: java ferns are incredibly adaptable, so if you keep the light levels moderate, your Java Fern should be happy. Be patient with your ferns even if you don’t see growth, that doesn’t mean they’re not working hard! Light Requirement for Java Fern in AqauriumĪll plants have different light preferences, and while some plants are pretty particular about the type of light they receive, Java Ferns can grow in a wide range of light. It’s also helpful to know that java ferns can grow slowly. It will only take a few weeks for the roots to take hold, and at that point, if you’ve used a cotton thread or fishing line, you can remove that from the plant.Īnother potential problem if you don’t weigh it down, the fern can bounce up, drift around, and float into the tank’s filter, where it could potentially suffer harm. To anchor the plant, take the rhizome (roots of the plant) and loosely tie it to decor, driftwood, fishing line, or cotton thread. While their leaves can be out of the water, the roots need to be constantly submerged, or else they dehydrate and perish.īefore their roots have a chance to get grounded, it might be a good idea to anchor the plant to another object within the aquarium to protect it from floating to the surface and dehydrating. To plant, simply place the fern in your tank and let the fern take it from there.Īn important note: Java Ferns need their roots in water at all times. Once you submerge their roots in water, they begin to grow. It means that Java Ferns can grow fully immersed in water and that their roots will grab onto rocks, the base of your aquarium, or anywhere else they decide to plant themselves. One of the big reasons why Java Ferns are so popular in home aquariums is that they’re technically epiphyte plants, meaning their roots grow on other objects (like other plants, rocks, tree trunks, etc.) Where Can I Buy Java Fern for Fish Tank?.Light Requirement for Java Fern in Aqaurium.
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