{"product_id":"brightwell-aquatics-reef-aquarium-calcium-supplement-1l-reef-code-a-for-two-part-dosing","title":"Brightwell Aquatics Reef Aquarium Calcium Supplement, 1L Reef Code A for Two-Part Dosing","description":"\u003cp\u003e\u003cstrong\u003eBrightwell Aquatics Reef Code A is a 1L calcium supplement for reef aquariums, designed as the calcium component of a two-part dosing system used with equal parts Reef Code B.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMatches natural seawater calcium ratios when paired with Reef Code B — supports balanced calcium and alkalinity dosing.\u003c\/li\u003e\n\u003cli\u003eSupplies calcium, magnesium, strontium, potassium, plus minor and trace minerals — supports corals, clams and calcareous algae.\u003c\/li\u003e\n\u003cli\u003eContains no phosphate, silicate or organic material — keeps these ingredients out of the supplement.\u003c\/li\u003e\n\u003cli\u003eMade in the USA and formulated by a marine scientist — brings a science-led formulation to aquarium maintenance.\u003c\/li\u003e\n\u003cli\u003eUse in marine or freshwater aquariums — offers dosing versatility across aquatic setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMaintaining calcium and alkalinity is part of caring for reef-building organisms, including corals, clams and calcareous algae. Reef Code A is made for aquarium keepers who want a measured calcium supplement for a new setup or an established tank, with Reef Code B providing the corresponding carbonate component.\u003c\/p\u003e\n\u003ch3\u003eWhat does Reef Code A do for a reef aquarium?\u003c\/h3\u003e\n\u003cp\u003eReef Code A supplies the calcium side of a two-part method for maintaining calcium and alkalinity. Used with equal parts Reef Code B, it is formulated to match natural seawater ratios and maintain ionic balance. Its mineral composition includes calcium, magnesium, strontium and potassium, along with minor and trace minerals. The brand also describes the formula as stronger than most competing products.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReef Code B supplies carbonates and other anions.\u003c\/li\u003e\n\u003cli\u003eThe two-part method is intended to support reef-building organisms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow do I dose Reef Code A?\u003c\/h3\u003e\n\u003cp\u003eShake the bottle well and test calcium concentration before dosing. Add 5 ml (0.17 US fl oz) per 25 gallons (94.6 L) of aquarium water every other day, or as needed to sustain alkalinity within the stated range of 412 to 450 ppm. Use Reef Code A with equal parts Reef Code B.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e250 ml (8.45 US fl oz) treats up to 1,250 gallons (4,731.8 L) when used as directed.\u003c\/li\u003e\n\u003cli\u003eAdjust dosing based on aquarium testing and the stated alkalinity range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhich aquariums and organisms is it made for?\u003c\/h3\u003e\n\u003cp\u003eReef Code A is intended for reef aquariums and is also presented for use in marine and freshwater aquariums. Its calcium and multi-mineral supplement supports reef-building organisms such as corals, clams and calcareous algae. It can be used when setting up a new aquarium or maintaining an established one.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMade for aquarium water treatment, not as a standalone source of the carbonate component.\u003c\/li\u003e\n\u003cli\u003ePair it with Reef Code B for the two-part approach to calcium and alkalinity dosing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat is in the formula, and where is it made?\u003c\/h3\u003e\n\u003cp\u003eThe formula contains major minerals including calcium, magnesium, strontium and potassium, plus minor and trace minerals. It contains no phosphate, silicate or organic material. Brightwell Aquatics Reef Code A is made in the USA and formulated by a marine scientist.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePack size: 1L.\u003c\/li\u003e\n\u003cli\u003eDesigned to simplify calcium and alkalinity maintenance through a two-part dosing method.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReef keepers maintaining calcium and alkalinity for corals, clams or calcareous algae can use Reef Code A as the calcium part of a paired dosing routine; aquarium keepers should follow the stated measurement and test calcium before dosing. Its defined role is calcium supplementation, with Reef Code B providing the matching carbonate component.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much Brightwell Aquatics Reef Code A should I dose?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Dose 5 ml per 25 gallons of aquarium water every other day or as needed to sustain alkalinity at 412 to 450 ppm; test calcium before dosing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can Brightwell Aquatics Reef Code A be used by itself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Brightwell Aquatics Reef Code A is the calcium component of a two-part method; use equal parts Reef Code B for the carbonate component.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Brightwell Aquatics","offers":[{"title":"Default Title","offer_id":55667390087511,"sku":"B075XHK1BX","price":54.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/4780\/0663\/files\/brightwell-aquatics-reef-code-a-bottle-front.jpg?v=1793375875","url":"https:\/\/bathpetsupplies.co.uk\/products\/brightwell-aquatics-reef-aquarium-calcium-supplement-1l-reef-code-a-for-two-part-dosing","provider":"BathPetSupplies","version":"1.0","type":"link"}