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Moving Sale! Up to 35% off thousands of items.
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Aquarium Calcium Dosing

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Seachem Reef Kalkwasser

Original price $28.95 - Original price $59.95
Original price $28.95 - Original price $59.95
Original price $28.95
$24.60 - $50.95
$24.60 - $50.95
Current price $24.60
2 in stock.

Reef Kalkwasser™is a pure calcium hydroxide with unsurpassed purity and solubility characteristics. Calcium hydroxide is used to prepare limewater ...

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Original price $28.95 - Original price $59.95
Original price $28.95 - Original price $59.95
Original price $28.95
$24.60 - $50.95
$24.60 - $50.95
Current price $24.60
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Seachem Reef Calcium

Original price $15.95 - Original price $23.95
Original price $15.95 - Original price $23.95
Original price $15.95
$13.55 - $20.35
$13.55 - $20.35
Current price $13.55
3 in stock.

Reef Calcium™ is a concentrated (50,000 mg/L) bioavailable polygluconate complexed calcium intended to maintain calcium in the reef aquarium withou...

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Original price $15.95 - Original price $23.95
Original price $15.95 - Original price $23.95
Original price $15.95
$13.55 - $20.35
$13.55 - $20.35
Current price $13.55
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Seachem Reef Reactor

Original price $54.95 - Original price $89.95
Original price $54.95 - Original price $89.95
Original price $54.95
$46.70 - $76.45
$46.70 - $76.45
Current price $46.70
1 in stock.

Reef Reactor™ is a high-purity source of aragonite, which supplies all important elements for optimal ionic balance and robust coral growth and col...

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Original price $54.95 - Original price $89.95
Original price $54.95 - Original price $89.95
Original price $54.95
$46.70 - $76.45
$46.70 - $76.45
Current price $46.70
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Seachem Reef Advantage Calcium

Original price $19.95 - Original price $49.95
Original price $19.95 - Original price $49.95
Original price $19.95
$16.95 - $42.45
$16.95 - $42.45
Current price $16.95
4 in stock.

Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in ...

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Original price $19.95 - Original price $49.95
Original price $19.95 - Original price $49.95
Original price $19.95
$16.95 - $42.45
$16.95 - $42.45
Current price $16.95
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Seachem Reef Status Calcium Test Kit

Original price $79.95
Original price $79.95 - Original price $79.95
Original price $79.95
Current price $67.95
$67.95 - $67.95
Current price $67.95
1 in stock.

This kit is capable of at least 150 calcium determinations and is designed specifically for seawater. The test is based on titration of calcium wit...

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Original price $79.95
Original price $79.95 - Original price $79.95
Original price $79.95
Current price $67.95
$67.95 - $67.95
Current price $67.95
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FritzPro Sodium Bicarbonate

Original price $24.95 - Original price $69.95
Original price $24.95 - Original price $69.95
Original price $24.95
$21.20 - $59.45
$21.20 - $59.45
Current price $21.20
1 in stock.

FritzPro Sodium Bicarbonate is a convenient and economical professional bulk reef supplement that can be used alone or as part of a two part calciu...

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Original price $24.95 - Original price $69.95
Original price $24.95 - Original price $69.95
Original price $24.95
$21.20 - $59.45
$21.20 - $59.45
Current price $21.20
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FritzPro Calcium Chloride

Original price $24.95 - Original price $69.95
Original price $24.95 - Original price $69.95
Original price $24.95
$21.20 - $59.45
$21.20 - $59.45
Current price $21.20
1 in stock.

FritzPro Calcium Chloride is a convenient and economical professional bulk reef supplement that can be used alone or as part of a two part calcium...

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Original price $24.95 - Original price $69.95
Original price $24.95 - Original price $69.95
Original price $24.95
$21.20 - $59.45
$21.20 - $59.45
Current price $21.20
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Fritz RPM Calcium Buffer System Pt 2 Calcium

Original price $21.95 - Original price $54.95
Original price $21.95 - Original price $54.95
Original price $21.95
$18.65 - $46.70
$18.65 - $46.70
Current price $18.65
2 in stock.

It is impossible to maintain a healthy, vibrant marine aquarium without also maintaining the proper levels of calcium and alkalinity. Fritz RPM Ca...

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Original price $21.95 - Original price $54.95
Original price $21.95 - Original price $54.95
Original price $21.95
$18.65 - $46.70
$18.65 - $46.70
Current price $18.65
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Fritz RPM Calcium Buffer System Pt 1 Alkalinity

Original price $21.95 - Original price $54.95
Original price $21.95 - Original price $54.95
Original price $21.95
$18.65 - $46.70
$18.65 - $46.70
Current price $18.65
2 in stock.

It is impossible to maintain a healthy, vibrant marine aquarium without also maintaining the proper levels of calcium and alkalinity. Fritz RPM Ca...

View full details
Original price $21.95 - Original price $54.95
Original price $21.95 - Original price $54.95
Original price $21.95
$18.65 - $46.70
$18.65 - $46.70
Current price $18.65
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Tunze Calcium Hydroxide 250g - 5074.500

Original price $32.95
Original price $32.95 - Original price $32.95
Original price $32.95
Current price $28.00
$28.00 - $28.00
Current price $28.00
2 in stock.

Refill pack for Calcium Dispenser 5074.

Original price $32.95
Original price $32.95 - Original price $32.95
Original price $32.95
Current price $28.00
$28.00 - $28.00
Current price $28.00
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