George Farmer advises how best to maintain Java moss in your aquascape to keep it looking great!
I have a 180-litre (40 gal) low-tech planted tank with Java fern, Anubias, Java moss and a few crypts. It runs perfectly well, with only a tiny bit of algae on the front of the glass.
However, the Java moss always seems untidy. It doesn't grow neatly like I see in a lot of photos and looks quite straggly. I also find it attracts a lot of dirt but if I syphon it, it just detaches and blocks the syphon tube.
I like the mature look it gives to my planted aquarium so I don't want to remove it. I wondered if there were any tips on getting neat growth and keeping it clean, please?
ABI SYKES
George Farmer's advice for aquarium moss
Aquarium mosses are brilliant for that lovely mature look, but you’re not alone. Many hobbyists find it can look straggly and trap a lot of debris over time.
Many of the photos you see of neat and compact moss growth may be because of aquarium conditions. Brighter lights, higher flow and CO2 injection leads to more colourful, dense and attractive aquatic plants.
Here are a few tips to help you tidy it up and keep it cleaner:
Regular trimming
Java moss grows in long, stringy runners if left unchecked. Use small, sharp scissors to give it a good haircut every few weeks, cutting it back quite short. Don’t worry – it will regrow, but denser and neater. You can even pass on cuttings to friends and other hobbyists.
If left untrimmed for too long, the moss close to the hardscape can die off as it does not receive light or circulation. If this happens it may be best to follow the next tip!
Small fragments of moss that you trim off can attach themselves elsewhere in the aquarium. These fragments can grow all over your aquarium and before you know it moss has taken over your scape. Use a fine fish net or your siphon hose to remove them to avoid this.
Re-attach your aquarium moss
After trimming, you can remove any loose clumps and, if necessary, re-tie or re-glue thinner layers onto rocks or wood. Moss does best when spread thinly over surfaces; thick pads tend to collect more detritus. Occasionally detaching the moss and starting fresh can keep it looking it's best.
Improve water circulation
Dead spots around moss are debris magnets. A gentle increase in circulation will help prevent dirt settling in the moss. You can do this by adjusting your filter outlet or adding a small powerhead or secondary filter.
To avoid having a second aquarium filter in your tank, you can upgrade the current one. A more powerful filter will have a similar effect as adding a second. Just make sure you transfer over that all important filter media to the new filter.
Removing organic waste from aquarium moss
Syphoning Java moss directly on top will just detach the moss from the décor. Instead, gently wave your hand, a turkey baster, or an aquarium brush over the moss to lift dirt into the water column. Then you can syphon it away from the open water.
Also, depending on their compatibility with your current stock, consider adding freshwater shrimps to the display. Cherry shrimp (Neocardidina davidi) and Amano shrimp (Caridina multidentata) are both good options. They can help prevent nuisance build-up of organics in the moss thanks to their constant grazing on biofilm.
With occasional pruning and better flow, you’ll find it stays denser, neater, and easier to clean. Even well-trimmed, Java moss won’t stay perfectly tidy for long, however. Part of its natural beauty is the softer, wild look it creates – so embrace a little imperfection.
Related article: Five of the best aquarium mosses