Adding natural structures such as driftwood to your aquarium requires some preparation and thought to bring out their best aesthetic qualities. Driftwood and other natural structures make up a large portion of your aquarium. Any adjustments needed can cause significant stress and in some cases require taking apart the aquarium and starting all over. Do it right the first time. With a bit of planning, you can have a beautifully aquascaped aquarium with minimal effort and disturbance.
Before placing the driftwood in your aquarium, draw a rough sketch of your aquarium and where you want to locate the driftwood. Consider how your aquarium will look with the driftwood positioned vertically as opposed to the conventional horizontal position. Explore different designs on paper to create a unique aquatic landscape. Drawing a rough sketch allows you to experiment and visualize your aquascape without disturbing your aquarium inhabitants in the process.
After determining where to place the driftwood, it needs to be cleaned before placement. Use a clean brush to scrub the driftwood thoroughly to remove any dirt or debris. Do not use soap or any chemical cleansers. Any residue will poison your aquarium. The cleaned driftwood will then need to be soaked to saturate and "cure."
Though most driftwood will remain submerged underwater, some driftwood remains slightly buoyant until it is fully saturated and "waterlogged." Soak the driftwood in a large bucket as long as possible making sure the entire piece is completely underwater. A minimum period of 1 to 2 weeks is recommended to allow total saturation.
Soaking also allows excess tannins that can darken and discolor the water, to leach out. The discoloration caused by the tannins will not harm your aquarium inhabitants but it will lower the pH slightly over time. Some hobbyists take advantage of this feature and utilize the tannins to achieve soft water conditions preferred by many tropical fish.
Monitor the soaking driftwood regularly to see if the water needs to be changed. As the water darkens, empty all of the water and gently rinse the driftwood. Fill the bucket with clean dechlorinated or RO water and continue soaking the driftwood. As you repeat this process, you will notice that the water will be less "tea-stained." When you no longer notice any significant discoloration for several days in a row, the driftwood is ready for placement.
Boiling driftwood has several benefits. Just like steeping a tea bag in hot water, boiling driftwood in a large stockpot encourages more tannins to leach out faster, thereby shortening the curing process. More importantly, boiling sterilizes the driftwood, killing algal or fungal spores that can take hold once introduced into the aquarium with the driftwood. Boiling the driftwood for 1-2 hours will sterilize the driftwood.
Once the driftwood has been properly prepared, it is ready for placement. Refer to the sketches you made early to place the driftwood in the ideal location. The most convenient moment to arrange your aquatic landscape is after you have removed some water during a water change. Simply place the driftwood into your aquarium and refill. With a bit of patience and some planning, you can create a beautiful aquatic landscape the first time with minimal stress to you and your aquarium inhabitants.
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