Things You'll Need
- Aquarium siphon (also called a gravel vacuum)
- 5-gallon bucket
- Water dechlorinator
Instructions
Place the 5-gallon bucket on the ground next to the tank, and place the end of the siphon tube into the bottom of the bucket.
Submerge the entire head of the siphon vacuum into the aquarium at approximately a 45-degree angle.
Start the siphon by vigorously moving the siphon head up and down in the water column to build pressure, being careful to keep the siphon submerged as you do so. Alternately, you can submerge the head of the siphon in the aquarium and suck on the other end of the siphon tube to get the flow started. Make sure to drop the tube into the bucket as soon as the flow of water arcs over the tank side, or you may wind up tasting your fish water.
Sink the head of the siphon tube into the aquarium gravel, starting in one corner of the tank, and lift back out to suck up debris.
Continue siphoning the gravel, moving in rows across the tank, until you have drained out 10 to 15 percent of the tank water.
Remove the siphon from the tank slowly to allow the water to drain into the bucket, and refill the tank with dechlorinated water.
Repeat this process once a week or every other week, cleaning a new patch of gravel each time.