![]() Java ferns do best with very low light levels. How many hours of light does a Java fern need? The rhizome may also decay and turn a dark, sludgy brown, which is a sign that the fern is dying and should be removed from the tank. In addition, the rhizome, which is the crown of the root structure, will become mushy and discolored, indicating rot. The leaves may begin to droop and dry out, even though the plant is still receiving adequate amounts of water. The leaves may also be spotted with white, fuzzy mold. When a Java fern is dying, the leaves will usually turn yellow, brown, or black. Regular maintenance, such as pruning away overgrown stems, can also help the plant to maintain a healthy appearance. If you wish to improve the health and appearance of your Java fern, focus instead on providing adequate light and nutrients. Dead leaves on the fern actually function as a natural fertilizer, providing nutrients to the plant.Īdditionally, removing the old leaves can often expose the remaining green leaves to more light and may cause further damage if they become sunburned. Though it can be tempting to get rid of discolored foliage, it is best to let the leaves die in place. No, you should not cut off the brown leaves of your Java fern. Make sure your fertilizer contains plant micronutrients, such as iron and manganese, that may be needed to keep the leaves a healthy shade of green. Java ferns prefer moist soil and need regular fertilizing to prevent browning. High ammonia, nitrate, and phosphate levels can also be toxic and cause browning.įinally, low levels of nutrients may also result in browning. In general, Java ferns do best in soft acidic water, with a pH level ranging from 5 to 7.5 and a temperature between 68☏ to 82☏. Incorrect water parameters can also cause Java ferns to brown. Java ferns require either medium-bright or moderate lighting for optimal growth and health, so if the lighting your tank provides is insufficient or has incorrect intensity or spectrum, the plant may start to brown. Inadequate lighting can cause your Java fern to brown if it does not receive sufficient amounts. Inadequate lighting, improper water parameters, and insufficient nutrients are some of the most common issues.
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