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Category: Maintenance

Gravel Vacuuming & Partial Water Changes

Regular, periodic, partial water changes are mandatory to maintain proper water quality and the only means by which nitrates can be maintained at acceptable levels. The gravel should be simultaneously vacuumed to remove trapped debris and uneaten food. Frequency will depend upon aquarium size, the species, size and number of fish, feeding habits and filtration quality.

Tropical Fish gravel bottom of saltwater tank aquarium

• A minimum of 25% of water volume should be changed every two weeks.

• Unplug aquarium heater(s) before beginning.

• Remove ornamentation other than live plants. “Walk the gravel cleaner across the entire bottom of the aquarium, agitating the gravel in the gravel cleaning tube until the water being removed flows clean.

• Refill the aquarium with tap water of the same temperature and pH as that of the aquarium water, after having added the prescribed amount of dechlorinator and aquarium salt (for marine tanks) to the water.

• Saltwater must be premixed and aerated or agitated for several hours to insure correct salinity and pH before being added to the aquarium.

• Wait 15 minutes before plugging the heater(s) back in.

Medication

Many medications require water changes before, during and/or after treatment. These must be done in accordance with the manufacturer’s instructions. Medicating without correcting improper water quality will have no beneficial effect. All carbon and other media must be removed from the filters prior to medicating. Do not turn off the filter! Just remove the chemical component of the filter.

Pond

When water temperature exceeds 50°-55°F, 25% of the pond volume should be changed every 3-4 weeks. This schedule should be complemented with larger volume water changes (50%+) associated with spring and fall maintenance. Particular attention should be paid to water quality and the related necessity of water changes during the hot summer months, with frequent monitoring of pH and dissolved oxygen required.

Filter Media Tips

Disposable filter cartridges should be replaced monthly. Filters recirculate the same water over and over. Regardless of where particulates collect: the aquarium bottom or the filter, they will be broken down to produce ammonia. Monthly replacement will remove the particulate from the aquarium and keep flow rate from slowing down due to clogging.

• Reusable and/or biological filter media should be washed in water taken from the aquarium. Chlorine in tap water is lethal to nitrifying bacteria.

• Micron cartridges should be cleaned by soaking in a solution of unscented household bleach and water (one part bleach to five parts water) for several hours. Rinse thoroughly under pressure. As an added precaution, they can be soaked in a solution of water and dechlorinator prior to being reused.

• Chemical filter media (i.e. carbon, Ammo-carb, and ammonia chips) should be replaced each month. These remove molecules of organic compounds from the water until the surface area becomes saturated. Once saturated, these media are no longer effective and may begin releasing compounds back into the water.

• Several manufacturers now offer rechargeable chemical media as an alternative to carbon. These should be used and recharged in accordance with the manufacturer’s instructions.

• IMPORTANT: If for any reason the power filter has been shut off for two hours or less, biological, chemical and mechanical filter media should be thoroughly rinsed before restarting the filter. To preserve existing nitrifying bacteria, rinse the biological filter media with water taken from the aquarium. If the power filter has been off for more than two hours, the mechanical and chemical filter media must be discarded and the biological media thoroughly rinsed. Toxic, anaerobic bacteria will be present.

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