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TMC Tropic Marin Bio-Calcium 500g

TMC Tropic Marin Bio-Calcium 500g

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SKU: 1010608

Tropic Marin Bio Calcium 500g allows carbon dioxide and calcium to be released into your fish tank.

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  • Product Description
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Product Description

Calcium is one of the most important elements in seawater, as together with carbon dioxide it is required for the skeletons of fishes and corals in the form of calcium carbonate. For this reason, calcium should be added to reef aquariums in particular, in order to enable the healthy growth of stony coral and create natural conditions. With Tropic Marin® Bio-Calcium the tank receives exclusively carbon dioxide and calcium in the biologically-ideal form in accordance with the Balling Method. In contrast to other calcium supplements, Tropic Marin Bio-Calcium does not disturb the ionic balance and the pH value remains stable.


  • Biologically ideal calcium supplement for reef aquariums using the Balling Method
  • The crystalline form means there is only one component instead of the usual threeSupplies carbon Supply calcium and alkalinity without disturbing the ionic balance
  • Contains all 70 trace elements found in natural sea water
  • No unnatural by-products
  • Exact dosages without prior dissolving
  • Will not alter pH of aquarium water when used as directed
  • Without phosphates and other pollutants

How to use:

Bio-Calcium increases both calcium and alkalinity at the same time. Calculate the total system water volume. Each level measuring spoon will raise the calcium level of 10 US gall./36 l by approximately 28 ppm and the alkalinity by 4° KH.

Natural sea water contains approximately 410 ppm calcium and 6.5° KH alkalinity. You should not exceed a calcium level of 440 ppm and an alkalinity of 8° KH due to the possibility of super saturation and subsequent precipitation of calcium carbonate. Maximum recommended dose is one level scoop per 10 US gall./36 l of aquarium water per day.

Sprinkle one measuring spoon full of Tropic Marin® Bio-Calcium onto the surface of the water, where it is being circulated by your pump. Take care not to allow a larger amount of undissolved Bio-Calcium to come into contact with invertebrates. Add the supplement slowly, to avoid a clouding from localised super saturation.

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Over time, the specific gravity of the water can rise slightly. Please therefore check the specific gravity on a regular basis.



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Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

Delivery & Returns

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us (stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.

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