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Aquarium Supplies

Fish Additives & Supplements

We carry a wide variety of additives produced by the most respected companies serving the aquarium hobby, such as Kent Marine, E.S.V., Seachem and Two Little Fishies. 2-part Calcium and Alkalinity Supplements are popular additives among reef keepers since calcium and alkalinity tend to deplete quickly in a reef aquarium.
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Search Suggestions: magnesium | strontium | iodine | B ionic | selcon | marc weiss | kalkwasser | Prodibio | purple up | prime
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Seachem Reef Strontium
Seachem Reef Strontium
$5.99 to $32.49
Kent Marine Ammonia Detox
Kent Marine Ammonia Detox
$6.49 to $9.49
Marc Weiss Reef Vital DNA
Marc Weiss Reef Vital DNA
Our Price: $32.99
American Marine Selcon
American Marine Selcon
$10.99 to $79.99
Seachem Prime
Seachem Prime
$7.79 to $45.99
Kent Marine Tech M
Kent Marine Tech M
$8.49 to $29.99
Prodibio BIO DIGEST
Prodibio BIO DIGEST
$17.99 to $45.99
Seachem Reef Builder
Seachem Reef Builder
$5.99 to $58.49
Seachem PhosGuard
Seachem PhosGuard
$5.79 to $53.49
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