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Natural South Pacific reef mud fills your refugium with minerals and nutrientsContains trace elements and small organisms to feed your hard or soft coralsAvailable in a twelve-pound starter bucket or a 24-oz booster for replenishingWalt Smith's reef mud feeds your reef aquarium the essential minerals and nutrients. Natural ocean mud from the islands of Fiji in the South Pacific feeds and nourishes your hard or soft corals. Contains naturally-occurring major and minor trace elements. The mud is also rich with a multitude of 5 to 100 micron-sized organisms that benefit Acropora and other small polyp stony corals. Two sizes: a 12-lb Starter bucket or a 24-oz Booster jar to replenish naturally dissipated mud.Please click on "More Information" for use, storage instructions, tips, and product specifications.

The ideal substrate for refugiums, it supplies trace elements, iodine, minerals, and nutrients, helping create a beneficial environment for aquarium food such as copepods, burrowing worms, decapods, and other sump organisms. It can also help boost your refugium's filtration, as it supports many types of nitrifying bacteria. Similar to varied sand in texture, its layers include marine bacteria, organic rich clay, iodine and chelated-element rich substrate, and super-fine aragonite organic acids. 1 gallon.

Over time, natural wear of the impeller may reduce power filter performance. Replace the impeller to ensure reliable power filter performance. Replacement Impellers are available for Bio System Power Filter andOxy Surface Skimmer Models 15, 25, 35, 55 and 75.

Over time, natural wear of the impeller may reduce power filter performance. Replace the impeller to ensure reliable power filter performance. Replacement Impellers are available for Bio System Power Filter andOxy Surface Skimmer Models 15, 25, 35, 55 and 75.

Over time, natural wear of the impeller may reduce power filter performance. Replace the impeller to ensure reliable power filter performance. Replacement Impellers are available for Bio System Power Filter andOxy Surface Skimmer Models 15, 25, 35, 55 and 75.

Over time, natural wear of the impeller may reduce power filter performance. Replace the impeller to ensure reliable power filter performance. Replacement Impellers are available for Bio System Power Filter andOxy Surface Skimmer Models 15, 25, 35, 55 and 75.

Aerating power filter and protein skimmer all in one Enables efficient chemical, mechanical, and biological filtration For use on small to medium saltwater aquariums Maintenance-free Skilter Filter offers total, efficient filtration for saltwater aquariums. Combines chemical, mechanical, and biological filtration techniques with protein skimming. Makes an ideal primary filter for 10-55 gallon saltwater and mini-reef aquariums. The advanced venturi-type protein skimmer of the Skilter Filter can also be used as a supplementary filtration device for aquariums up to 100 gallons. Hangs on back of aquarium. Replaceable Bio-Matrix Cartridge comes with one white polypad and one black carbon pad. Unit includes a 90-day limited warranty.Please click on "More Information" for additional features.

Aerating power filter and protein skimmer all in one Enables efficient chemical, mechanical, and biological filtration For use on small to medium saltwater aquariums Maintenance-free Skilter Filter offers total, efficient filtration for saltwater aquariums. Combines chemical, mechanical, and biological filtration techniques with protein skimming. Makes an ideal primary filter for 10-55 gallon saltwater and mini-reef aquariums. The advanced venturi-type protein skimmer of the Skilter Filter can also be used as a supplementary filtration device for aquariums up to 100 gallons. Hangs on back of aquarium. Replaceable Bio-Matrix Cartridge comes with one white polypad and one black carbon pad. Unit includes a 90-day limited warranty.Please click on "More Information" for additional features.

Durable, reusable, and effective pre-filter sock for sump filters Pre-filter sock includes Inlet Holder and PVC adaptor for convenient installationEasy-to-install mechanical pre-filter unit attaches directly to sump rimsMechanical pre-filter sock removes large particles for crystal clear aquarium water. Easily attaches to sump rims less than 1-1/4". Removable sock hangs from acrylic holder that accepts 1" PVC inlet line from overflow system. Rinse filter sock regularly for extended use. Inlet Holder measures 5-3/8" L x 5" W x 2-1/2" H. Please click on "More Information" for mechanical filtration information.

Durable, reusable, and effective pre-filter sock for sump filters Pre-filter sock includes Inlet Holder and PVC adaptor for convenient installationEasy-to-install mechanical pre-filter unit attaches directly to sump rimsMechanical pre-filter sock removes large particles for crystal clear aquarium water. Easily attaches to sump rims less than 1-1/4". Removable sock hangs from acrylic holder that accepts 1" PVC inlet line from overflow system. Rinse filter sock regularly for extended use. Inlet Holder measures 5-3/8" L x 5" W x 2-1/2" H. Please click on "More Information" for mechanical filtration information.