Modern Reef All-in-One Reef Keeping System (RKS) REEF ENGINE CORE 7.7x 4x1000ml

£39.99

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Modern Reef Reef Engine Core RKS 7.7x – 4 × 2.5 L Set

 

Modern Reef Reef Engine Core RKS 7.7x is a concentrated, four-part dosing system designed to maintain alkalinity, calcium and magnesium while supplying trace elements, micronutrients and amino acids.

Developed by Akil at Euro Corals, its proportional-consumption formula uses equal dosing of all four parts, adjusted to your aquarium’s demand. It supports coral growth and colouration and forms the foundation of the Modern Reef system alongside Complete Reef Food and Polypop.

 

Key Benefits

  • Comprehensive supplementation: Supplies major elements, trace elements, micronutrients and amino acids.
  • Supports coral colouration: Formulated to support fluorescent and non-fluorescent pigments, including those in Acropora.
  • Equal-part dosing: Adjust all four components together according to your aquarium’s consumption.
  • Concentrated formula: Supplied as four ready-to-use liquids.
  • Free from nitrate and phosphate.

 

What’s Included

Component Quantity
Base KH1 2.5 litres
Base KH2 2.5 litres
Base CAL 2.5 litres
Base MAG 2.5 litres

Directions & Dosage

Dose equal amounts of each component, adjusting the daily dose to maintain stable parameters. A calibrated four-head dosing pump is recommended, particularly for SPS-dominant aquariums.

The manufacturer’s stated concentration is 10 ml per 100 litres to raise alkalinity by 2 dKH.

During the first two weeks, monitor calcium and alkalinity to establish your maintenance dose. Modern Reef recommends finding a stable balance within 6.8–8 dKH and 380–420 ppm calcium. Continue checking calcium and magnesium periodically.

  • Dose in the sequence KH1 → CAL → KH2 → MAG, leaving 10–15 minutes between components.
  • Spread the daily dose across multiple smaller additions.
  • Check dosing-pump calibration regularly; the manufacturer recommends checking every six months.
  • No shaking or magnetic stirring is required.

 

Using a three-head doser: Base KH1 and Base KH2 can be combined in equal quantities. Dose this combined solution at twice the individual component dose, while dosing CAL and MAG at their normal amounts.

 

Important Information

The formula already contains amino acids and trace elements. Avoid adding separate amino-acid, mixed trace-element or coral colouration supplements alongside it, as this may duplicate dosing.

Store in a cool, dark place away from sunlight and aquarium lighting, preferably in the original canisters. Refrigeration is not required.

 

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To Return Your Order:

  • Please use the contact us section to Email or Call with your reasons for return.
  • You must provide full details, your name, address and postcode.
  • Your date of purchase and the date you accepted delivery of the item.
  • Your reason for returning the item – unwanted / faulty / damaged etc
  • Please also state if you would like your item replaced or fully refunded.
  • And you must do so within 7 days of accepting delivery of your item.

We will contact you within 2 working days with our feedback and advise you further on returning your item. No refunds will be processed until they are received and fully inspected by one of our advisers. Where possible you can provide these details in person and return your items to our Glasgow store.

Please also revise our Policy’s below before getting in touch.

Standard Returns Policy

In all situations your item must be returned to us at your own expense. Your products are your responsibility until they are received for inspection by us in our Glasgow store.

We cannot in any instance accept returns for any damaged in transit goods if you have inspected and accepted delivery of the item. If the item is damaged upon arrival please do not accept delivery and contact us immediately. If you wish to return your item for other reasons we allow 7 working days to return any faulty or unwanted goods. Where possible we will endeavor to send out replacement parts and work towards a solution in replacing or refunding your item.

Livestock Policy

In any instance we cannot accept return of any livestock purchase. We ask that you take the proper precautions before placing any order of livestock by fully researching the fish, coral or invertebrate. We cannot accept of the item once your order has been placed and/or received and reserve the right to deny refund. Special instances in which you have mistakenly ordered an unsuitable item and the item has not been processed for dispatch and still in our Glasgow store we can endeavor to cancel your order for you. We will always try our best to do what we can for our customers and we always ask that you try and get in touch with a customer adviser for any advice or help.

Livestock DOA Policy 

If your livestock item is received Dead On Arrival we ask that you contact us immediately. We reserve the right to deny refund if we are not contacted within 24 hours after accepting delivery of your item. We reserve the right to deny refund in any instance we deem appropriate of any deaths of livestock removed from their original shipment packaging after 24 hours. We ask that you take a photograph of the livestock in its original packaging and use our contact us section to email us. We reserve the right to deny refund if we suspect any foul play or misconduct when handling your new livestock item.

Postage Refund Policy

In any event we reserve the right to deduct postage and restocking fees.