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Aquarium Supplies

Choose from the wide selection of aquarium supplies such as thermometers, timers, nets, fish traps, fragging supplies, tweezers, and many other indispensable tools that will make your hobby ever more enjoyable.

At AquaCave, we offer some of the best selections and best prices on aquarium supplies, aquarium products, and equipment for your marine, reef, and freshwater aquarium.

240 of 359 Items
  • Extra Large Tank Divider 11 3/8" x 15 1/2" Extra Large Tank Divider 11 3/8" x 15 1/2" Extra Large Tank Divider 11 3/8" x 15 1/2" Extra Large Tank Divider 11 3/8" x 15 1/2" Extra Large Tank Divider 11 3/8" x 15 1/2"

    PenPlax

    Extra Large Tank Divider 11 3/8" x 15 1/2"

    Extra Large Tank Divider 11 3/8" x 15 1/2" (11 3/8” x 9 5/8”) The Tank-Divider Box is designed to fit 20 gallon tanks. The Tank-Divider allows aquarium owners to instantlyconvert there aquarium from one into two. The Divider...

    $19.95
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  • Super Tank Divider 11 3/8" x 17 1/2" Super Tank Divider 11 3/8" x 17 1/2" Super Tank Divider 11 3/8" x 17 1/2" Super Tank Divider 11 3/8" x 17 1/2" Super Tank Divider 11 3/8" x 17 1/2"

    PenPlax

    Super Tank Divider 11 3/8" x 17 1/2"

    Super Tank Divider 11 3/8" x 17 1/2" (11 3/8” x 17 1/2”) The Tank-Divider Box is designed to fit 55 gallon tanks. The Tank-Divider allows aquarium owners to instantlyconvert there aquarium from one into two. The Divider provides a split...

    Was: $22.95
    Now: $19.51
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  • IceCap 39" Coral Feeder IceCap 39" Coral Feeder IceCap 39" Coral Feeder

    IceCap

    IceCap 39" Coral Feeder

    IceCap 39" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without getting your hands wet. Soft rubber tip prevents possible damage.IceCap 39" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without...

    $18.99
    Add to Cart
  • 8" Heavy Duty Coral Cutting Shear 8" Heavy Duty Coral Cutting Shear

    AquaCave

    8" Heavy Duty Coral Cutting Shear

    For fragmenting hard and semi-hard stony corals. Easily cuts large and thick corals. Precision ground jaws cut corals with little or no effort. Double tension springs. Heavy Duty sheer cutters for fragmenting hard and semi-hard stony corals. Easily cuts...

    $18.95
    Sold Out - More on the way
  • Specimen Container, SMALL Specimen Container, SMALL Specimen Container, SMALL

    AquaCave

    Specimen Container, SMALL

    Specimen Container, SMALL Multi-purpose clear container is commonly used in aquarium stores for holding fish collected from a tank before putting them in a bag. Can also be used for medicating sick fish or observing fish. The 1" wide handle allows the...

    $18.95
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  • Salifert Flat Worm Exit

    Salifert

    Salifert Flat Worm Exit

    Salifert Flat Worm Exit.Salifert Flatworm Exit is a safe solution to get rid of flatworms in your tank. It is perfectly harmless for the reef inhabitants, both fish and invertebrates, but definitely deadly for the flatworms. Flatworm body juice can...

    $18.49
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  • Ocean Wonders 5.5" Black Oxide Stony Coral Cutter Ocean Wonders 5.5" Black Oxide Stony Coral Cutter

    Ocean Wonders

    Ocean Wonders 5.5" Black Oxide Stony Coral Cutter

    Ocean Wonders 5.5" Black Oxide Stony Coral Cutter Oceans Wonders coral frag tools are made with 316 surgical stainless steel.  Always rinse tools under HOT tap water and dry thoroughly before storing. This will ensure long lasting durability and...

    $17.99
    Add to Cart
  • Ocean Wonders 5.5" Stainless Steel Stony Coral Cutter Ocean Wonders 5.5" Stainless Steel Stony Coral Cutter

    Ocean Wonders

    Ocean Wonders 5.5" Stainless Steel Stony Coral Cutter

    Ocean Wonders 5.5" Stainless Steel Stony Coral Cutter Oceans Wonders coral frag tools are made with 316 surgical stainless steel.  Always rinse tools under HOT tap water and dry thoroughly before storing. This will ensure long lasting durability and...

    $17.99
    Add to Cart
  • Titanium Grounding Probe Titanium Grounding Probe

    Rio

    Titanium Grounding Probe

    RID-VOLT gives you a positive electrical ground for your aquatic system. When properly installed, "stray voltage" which is generated by pumps, heater, lights, and other electrical devices used by aquariums will be carried away. RID VOLT protects you and...

    $17.99
    Add to Cart
  • IceCap 27" Coral Feeder IceCap 27" Coral Feeder IceCap 27" Coral Feeder

    IceCap

    IceCap 27" Coral Feeder

    IceCap 27" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without getting your hands wet. Soft rubber tip prevents possible damage.IceCap 27" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without...

    $16.99
    Add to Cart
  • OASE Digital Thermometer OASE Digital Thermometer OASE Digital Thermometer

    OASE

    OASE Digital Thermometer

    OASE Digital Thermometer The Digital Thermometer provides simple, no mess aquarium temperature readings Adhesive backing easily allows you to stick this thermometer to the exterior of your aquarium for secure placement Sensor is pressed tightly...

    $16.99
    Sold Out - More on the way
  • Ocean Wonders Frag Hub 5.0 - Purple Ocean Wonders Frag Hub 5.0 - Purple Ocean Wonders Frag Hub 5.0 - Purple

    Ocean Wonders

    Ocean Wonders Frag Hub 5.0 - Purple

    Ocean Wonders Frag Hub 5.0 - Purple Oceans Wonder Coral FRAG HUBS are perfect for safely holding all of your frags in one convenient spot in your aquarium. Our frag hubs are available in a variety of sizes with 5, 10, or 20 holes. They are made from the...

    $16.99
    Add to Cart
  • PolypLab Reef Primer Shot Coral Dip 45 gr. PolypLab Reef Primer Shot Coral Dip 45 gr.

    PolypLab

    PolypLab Reef Primer Shot Coral Dip 45 gr.

    PolypLab Reef Primer Shot Coral Dip 45 gr. TO BE USED AS A DIP ONLY. Not to be used in the aquarium. Reef Primer is a premium dip for your corals and frags. Use in your acclimation routine before adding new corals to your system. Reef Primer will...

    $16.99
    Add to Cart
  • 1 5/8" Diamond Coated Cutting Wheel Set, 10 Pcs. 1 5/8" Diamond Coated Cutting Wheel Set, 10 Pcs.

    AquaCave

    1 5/8" Diamond Coated Cutting Wheel Set, 10 Pcs.

    1 5/8" Diamond Coated CuttingWheel Set, 10 Pcs. 1" diameter diamond coated cutting wheel together with one adapter. 0.5mm thick. Great for fraging hard corals with Rotozip. 1 5/8" Diamond Coated Cutting Wheel Set, 10 Pcs. 1 5/8" diameter diamond coated...

    $16.95
    Add to Cart
  • Large Tank Divider 11 3/8" x 11 3/8" Large Tank Divider 11 3/8" x 11 3/8" Large Tank Divider 11 3/8" x 11 3/8" Large Tank Divider 11 3/8" x 11 3/8" Large Tank Divider 11 3/8" x 11 3/8"

    PenPlax

    Large Tank Divider 11 3/8" x 11 3/8"

    Large Tank Divider 11 3/8" x 11 3/8" Instantly converts one aquarium into two! *Separates baby fish or "rough" fish. *Allows for unrestricted filtration and heater circulation.Large Tank Divider 11 3/8" x 11 3/8" Instantly converts one...

    $16.95
    Add to Cart
  • PennPlax Aquarium Nursery, Breeding Trap PennPlax Aquarium Nursery, Breeding Trap PennPlax Aquarium Nursery, Breeding Trap

    PenPlax

    PennPlax Aquarium Nursery, Breeding Trap

    PennPlax Aquarium Nursery,Breeding Trap.A primary need of any aquarium hobbyist is a simple, safe method of saving baby fish. After years of researchPennPlax Aquarium Nursery / Breeding Trap A primary need of any aquarium hobbyist is a simple, safe...

    $16.95
    Sold Out - More on the way
  • Red Sea DipX Coral Dip 250ml Red Sea DipX Coral Dip 250ml Red Sea DipX Coral Dip 250ml

    Red Sea

    Red Sea DipX Coral Dip 250ml.

    Red Sea DipX Coral Dip 250ml. DipX is a highly effective dip for safely introducing new corals and live rocks to your aquarium. Features- Safe for all kinds of corals: SPS, LPS and Soft corals, Zoanthids, mushroom anemones (Discosoma and Ricordea) and...

    $15.99
    Sold Out - More on the way
  • SR Aquaristik Aquarium Net 10" x 7" SR Aquaristik Aquarium Net 10" x 7" SR Aquaristik Aquarium Net 10" x 7" SR Aquaristik Aquarium Net 10" x 7"

    SR Aquaristik

    SR Aquaristik Aquarium Net 10" x 7"

    SR Aquaristik Aquarium Net 10" x 7" SR Aquaristik Aquarium Nets are different from most traditional fish nets in that they are dual purpose.  Normally you would need two nets; one for skimming debris from the water and a second one for catching fish. ...

    $15.99
    Add to Cart
  • Coral Pruner - Maxspect Coral Pruner - Maxspect Coral Pruner - Maxspect

    Maxspect Mazarra

    Coral Pruner - Maxspect

    Coral Pruner - Maxspect Handle large coral branches effortlessly Designed specifically for marine aquariums Anti-corrosion components Stainless steel, anodized with chromium Curved blades for a cleaner cut Heavy duty-- can handle 3/4" branches...

    $14.99
    Add to Cart
  • DD Jumpguard Replacement Mesh 78.75" x 43.5" DD Jumpguard Replacement Mesh 78.75" x 43.5"

    DD The Aquarium Solution

    DD Jumpguard Replacement Mesh 78.75" x 43.5"

     DD Jumpguard Replacement Mesh 78.75" x 43.5" Replacement Mesh for Jumpguard   DD Jumpguard Replacement Mesh 78.75" x 43.5" Replacement Mesh for Jumpguard  Product code: 8006Item No. AC-DD55212

    $14.99
    Add to Cart
  • Nyos Reef Putty 7oz - Stone Black Nyos Reef Putty 7oz - Stone Black

    NYOS

    Nyos Reef Putty 7oz - Stone Black

    Nyos Reef Putty 7oz - Stone Black     Nyos® REEF PUTTY is a two component epoxy putty for corals and reef structures. REEF PUTTY has the following characteristics: Can be used above water and underwater Soft epoxy putty with a processing time...

    $14.99
    Add to Cart
  • Nyos Reef Putty 7oz - Stone Grey Nyos Reef Putty 7oz - Stone Grey

    NYOS

    Nyos Reef Putty 7oz - Stone Grey

    Nyos Reef Putty 7oz - Stone Grey Nyos® REEF PUTTY is a two-component epoxy putty for corals and reef structures. REEF PUTTY has the following characteristics: Can be used above water and underwater Soft epoxy putty with a processing time of...

    $14.99
    Add to Cart
  • Ocean Wonders Frag Hub 5.0 - White Ocean Wonders Frag Hub 5.0 - White Ocean Wonders Frag Hub 5.0 - White Ocean Wonders Frag Hub 5.0 - White Ocean Wonders Frag Hub 5.0 - White

    Ocean Wonders

    Ocean Wonders Frag Hub 5.0 - White

    Ocean Wonders Frag Hub 5.0 - White Oceans Wonder Coral FRAG HUBS are perfect for safely holding all of your frags in one convenient spot in your aquarium. Our frag hubs are available in a variety of sizes with 5, 10, or 20 holes. They are made from the...

    $14.99
    Add to Cart
  • PolypLab Premium Coral Frag Glue 28g - 7 pack PolypLab Premium Coral Frag Glue 28g - 7 pack

    PolypLab

    PolypLab Premium Coral Frag Glue 28g - 7 pack

    PolypLab Premium Coral Frag Glue 28g - 7 pack This product is designed for glueing aquatic plants and corals For underwater use only When used properly, this product is safe for all aquatic plants and animals   What makes Polyplab's glue...

    $14.99
    Add to Cart
  • 1" Diamond Coated Cutting Wheel Set, 10 Pcs. 1" Diamond Coated Cutting Wheel Set, 10 Pcs.

    AquaCave

    1" Diamond Coated Cutting Wheel Set, 10 Pcs.

    1" Diamond Coated CuttingWheel Set, 10 Pcs. 1" diameter diamond coated cutting wheel together with one adapter. 0.5mm thick. Great for fraging hard corals with Rotozip. 1" Diamond Coated Cutting Wheel Set, 10 Pcs. 1" diameter diamond coated cutting...

    $14.95
    Add to Cart
  • 20" Aquarium Tongs by JBJ Aquatics

    JBJ

    20" Aquarium Tongs by JBJ Aquatics

    JBJ Aqaurium tong is a helpful tool for all works in the aquarium. Spring-action with trimmer, ideal for general plant or reef maintenance, as well as other purposes. JBJ Aqaurium tong is a helpful tool for all works in the aquarium. Spring-action with...

    $14.95
    Add to Cart
  • 7" Heavy Duty Coral Cutting Shear

    AquaCave

    7" Heavy Duty Coral Cutting Shear

    For fragmenting hard and semi-hard stony corals. Easily cuts large and thick corals. Precision ground jaws cut corals with little or no effort. Double tension springs. Heavy Duty sheer cutters for fragmenting hard and semi-hard stony corals. Easily cuts...

    $14.95
    Add to Cart
  • Dosing Tube Holder Dosing Tube Holder Dosing Tube Holder Dosing Tube Holder

    RED STARFISH

    Dosing Tube Holder

    Dosing Tube Holder Red Starfish Dosing Tube Holder is super functional and affordable. Just hang the holder on the side of your aquarium or sump and secure with the adjustment screws.Unlike other that are expensive or will only fit on rimless aquariums,...

    $14.95
    Add to Cart
  • IceCap 19" Coral Feeder IceCap 19" Coral Feeder IceCap 19" Coral Feeder

    IceCap

    IceCap 19" Coral Feeder

    IceCap 19" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without getting your hands wet. Soft rubber tip prevents possible damage.IceCap 19" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without...

    $14.95
    Add to Cart
  • Simplicity Dosing Tube Holder Simplicity Dosing Tube Holder

    Simplicity

    Simplicity Dosing Tube Holder

    Simplicity Dosing Tube Holder Fits aquariums and sumps with a maximum thickness of 1.25 in., including rim Secures flexible tubing with a max. thickness of 5/8 in. Can be installed vertically (standard sump) or horizontally (Euro-style...

    $14.95
    Add to Cart
  • Seaside Probe Holder Seaside Probe Holder

    Seaside

    Seaside Probe Holder

    Seaside Probe Holder Holder can fit up to four probes. It’s design to fit ph, ORP, salinity and/or temp probe. This probe holder can also hold regular air line tubing for dosing pump or calcium reactor output. The holder can be mount on the sump...

    Was: $14.95
    Now: $13.46
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  • Seachem Reef Dip 250 ml. 8 oz. Seachem Reef Dip 250 ml. 8 oz.

    Seachem

    Seachem Reef Dip 250 ml. 8 oz.

    Seachem Reef Dip 250 ml.Reef Dip contains elemental iodine complexed to a protective slime coat for safely and gently disinfecting corals.It is effective against bacteria, fungus, and protozoans. It may be used prophylactically (without evidence of...

    $13.43
    Add to Cart
  • Aquarium Silicone Sealant, Black 10.2 fl. oz.

    AquaCave

    Aquarium Silicone Sealant, Black 10.2 fl. oz.

    Aquarium Silicone Sealant, Black 10.2 fl. oz. Having the right tool for the job is perhaps the best way to ensure that your project comes together neatly and performs the way you designed it. Silicone is one of the most commonly used tools of our trade,...

    $12.99
    Add to Cart
  • Aquarium Silicone Sealant, Clear 10.2 fl. oz.

    AquaCave

    Aquarium Silicone Sealant, Clear 10.2 fl. oz.

    Aquarium Silicone Sealant, Clear 10.2 fl. oz. Having the right tool for the job is perhaps the best way to ensure that your project comes together neatly and performs the way you designed it. Silicone is one of the most commonly used tools of our trade,...

    $12.99
    Add to Cart
  • DD Jumpguard - Flex-Cutout Kit DD Jumpguard - Flex-Cutout Kit DD Jumpguard - Flex-Cutout Kit

    DD The Aquarium Solution

    DD Jumpguard - Flex-Cutout Kit

    DD Jumpguard - Flex-Cutout Kit The Jumpguard Flexi-cutout Set provides you with 2 standard corners and 2 reverse corners to allow you to modify the frame around any larger overflow boxes, light brackets, cables or pipework etc, that would not be covered...

    $12.99
    Add to Cart
  • DD Jumpguard - Multi Cutout Kit DD Jumpguard - Multi Cutout Kit

    DD The Aquarium Solution

    DD Jumpguard - Multi Cutout Kit

    DD Jumpguard - Multi Cutout Kit Each Jumpguard Multi-cutout Set provides you with 3 different cutout options to allow you to modify the frame around any light brackets, cables or pipework etc.DD Jumpguard - Multi Cutout Kit Each Jumpguard Multi-cutout...

    $12.99
    Add to Cart
  • IceCap 15" Coral Feeder IceCap 15" Coral Feeder IceCap 15" Coral Feeder

    IceCap

    IceCap 15" Coral Feeder

    IceCap 15" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without getting your hands wet. Soft rubber tip prevents possible damage.IceCap 15" Coral Feeder IceCap Coral Feeder allows you to target feed corals and fish without...

    $12.99
    Add to Cart
  • Ocean Wonders Purple CERAMIC Coral Frag Plugs, 30 pack Ocean Wonders Purple CERAMIC Coral Frag Plugs, 30 pack

    Ocean Wonders

    Ocean Wonders Purple CERAMIC Coral Frag Plugs, 30 pack

    Ocean Wonders Coralline Purple Coral Frag Plugs 30 pack Oceans Wonders Ceramic Coral Frag Plugs are perfect for the propagation or fragging of hard and soft branching corals such as Acropora, Birdsnest, Montipora, Kenya Trees, Xenia, ect. They...

    $12.99
    Add to Cart
  • SR Aquaristik Aquarium Net 6" x 5" SR Aquaristik Aquarium Net 6" x 5" SR Aquaristik Aquarium Net 6" x 5" SR Aquaristik Aquarium Net 6" x 5"

    SR Aquaristik

    SR Aquaristik Aquarium Net 6" x 5"

    SR Aquaristik Aquarium Net 6" x 5" SR Aquaristik Aquarium Nets are different from most traditional fish nets in that they are dual purpose.  Normally you would need two nets; one for skimming debris from the water and a second one for catching fish. ...

    $12.99
    Sold Out - More on the way
  • Two Little Fishes AquaStick Aquarium Epoxy, 4 oz. Gray Two Little Fishes AquaStick Aquarium Epoxy, 4 oz. Gray

    Two Little Fishies

    Two Little Fishes AquaStick Aquarium Epoxy, 4 oz. Gray

    Two Little Fishes AquaStick Aquarium Epoxy, 4 oz. Gray AquaStik, Stone Grey. Underwater Epoxy Putty for marine and freshwater aquariums, Ponds and Paludariums. Also useful in Reptile & Small Animal habitats. Neutral color. Non-toxic to fish, plants...

    $12.99
    Add to Cart
240 of 359 Items

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