How to Grow a Cactus in an Aquarium
- 1). Clean the aquarium with a mixture of 1 part bleach and 10 parts water. Rinse the aquarium several times to remove the cleaning solution and then dry the aquarium.
- 2). Place the aquarium in a location with bright interior lighting, but not near a window. You must keep sunlight from reflecting through the sides of the aquarium, which can burn the cactus.
- 3). Cover the bottom of the aquarium with 2 inches of thick gravel. Add a 2-inch layer of cactus soil or mix your own using equal parts of sand and potting soil, or 1 part sand to 2 parts potting soil.
- 4). Create a hole the same size of the container or the cactus roots. Another option is to keep the cactus in the same pot and simply bury the pot in the soil.
- 5). Wear gloves to transplant the cactus in the aquarium or use newspaper or cloth to wrap the cactus before moving it. Make sure that the cactus isn't planted deeper than it was growing in the container.
- 6). Wait at least one week to water the cactus to allow any damage to the roots to heal. Don't water again until the soil nearly dries.
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