Seachem Reef Advantage Calcium 1kg
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 natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health. To prevent this you must provide calcium (Reef Advantage Calcium) and carbonates (Reef Builder or Reef Carbonate). Reef Advantage Calcium also includes magnesium and strontium in amounts proportionate to typical utilization ratios. 1 kg treats 8000 gallons.
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 natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health. To prevent this you must provide calcium (Reef Advantage Calcium) and carbonates (Reef Builder or Reef Carbonate). Reef Advantage Calcium also includes magnesium and strontium in amounts proportionate to typical utilization ratios. 1 kg treats 8000 gallons.
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 natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health. To prevent this you must provide calcium (Reef Advantage Calcium) and carbonates (Reef Builder or Reef Carbonate). Reef Advantage Calcium also includes magnesium and strontium in amounts proportionate to typical utilization ratios. 1 kg treats 8000 gallons.
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 natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health. To prevent this you must provide calcium (Reef Advantage Calcium) and carbonates (Reef Builder or Reef Carbonate). Reef Advantage Calcium also includes magnesium and strontium in amounts proportionate to typical utilization ratios. 1 kg treats 8000 gallons.
in 6 offers
The lowest price for Seachem Reef Advantage Calcium 1kg right now is $39.95 at The Tech Den, compared across 6 retailers.
The all-time low was $22.62 on 8 July 2025 — today's price is 77% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 5 June 2026.
Last updated at 05/06/2026 19:40:37
Seachem Reef Advantage Calcium 1kg - Clearance | The Tech Den
Delivery $9.50
Seachem Reef Advantage Calcium - AquaticSupplies.com.au 1kg
Delivery between 11–16 June $11.95
Seachem Reef Advantage Calcium 1kg
Delivery between 10–17 June $9.50
Seachem Reef Advantage Calcium 1 Kilogram Concentrated Powder Ionic
Delivery $62.47
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Seachem Reef Advantage Calcium 1kg
Delivery between 8–19 June $9.95
Seachem Reef Advantage Calcium 1kg
Delivery between Wed – Fri $9.62
originally posted on Google Customer Reviews
Used regularly to maintain good calcium levels for coral growth
originally posted on influenster.com
I love this product for my saltwater tank! I was having a problem keeping the ph in my tank up and this product safely raised the ph in my tank to 8.2! My fish have been thriving every since! Would highly recommend to any marine aquarists who are struggling to keep their ph up!
originally posted on petco.com
Seachem products like Reef Fusion 1 & 2, calcium, reef builder, reef complete, iodide, Prime, etc. have helped me transform my reef tank over the last 8 months. With careful parameter monitoring and maintenance, it has made my tank become easier to maintain and enjoy.
Seachem Reef Advantage Calcium 1kg - Clearance | The Tech Den
Delivery $9.50
Seachem Reef Advantage Calcium - AquaticSupplies.com.au 1kg
Delivery between 11–16 June $11.95
Seachem Reef Advantage Calcium 1kg
Delivery between 10–17 June $9.50
Seachem Reef Advantage Calcium 1 Kilogram Concentrated Powder Ionic
Delivery $62.47
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Seachem Reef Advantage Calcium 1kg
Delivery between 8–19 June $9.95
Used regularly to maintain good calcium levels for coral growth
I love this product for my saltwater tank! I was having a problem keeping the ph in my tank up and this product safely raised the ph in my tank to 8.2! My fish have been thriving every since! Would highly recommend to any marine aquarists who are struggling to keep their ph up!
Seachem products like Reef Fusion 1 & 2, calcium, reef builder, reef complete, iodide, Prime, etc. have helped me transform my reef tank over the last 8 months. With careful parameter monitoring and maintenance, it has made my tank become easier to maintain and enjoy.
Excellent calcium supplement and magnesium supplement.
I needed a calcium supplement and this is perfect. Super easy to mix and dose. It’s also at a great price point.
Costed a bit more than going to the store and buying it but good product overall.
Just like all the seachem products ive used i have come to really love this brand. Easy to do and rasies Ca. This also has trace elements of mag and strontium. As with all powders DO NOT just pour into the tank. Mix with tank water or top off water and pour into sump(if you have) or tank.
Good product for reef tank to raise the calcium level in your tank. Easy instructions to read
It raises calcium pretty fast if you need too. It also has strontium.
