---
product_id: 76549716
title: "RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml"
brand: "red sea"
price: "£12.06"
currency: GBP
in_stock: true
reviews_count: 2
url: https://www.desertcart.co.uk/products/76549716-red-sea-fish-pharm-ltd-reef-foundation-a-ca-sr
store_origin: GB
region: United Kingdom
---

# RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml

**Brand:** red sea
**Price:** £12.06
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml by red sea
- **How much does it cost?** £12.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/76549716-red-sea-fish-pharm-ltd-reef-foundation-a-ca-sr)

## Best For

- red sea enthusiasts

## Why This Product

- Trusted red sea brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

A successful coral reef aquarium depends on how well you maintain the water parameters which are the key to a stable coral environment. All of the elements found in natural seawater play a role in providing optimal water parameters, but some are more significant than others. These elements, the foundation of the reef environment, include the three major elements: Calcium (Ca), Magnesium (Mg) and Carbonates (CO3). All three have a major effect on water chemistry (pH stability, Alkalinity, ionic strength) and on many of the coral's biological processes (skeleton formation, ions exchange, photosynthesis).The foundation elements complement each other in the formation of coral skeleton. If not balanced correctly one of the elements will quickly limit healthy coral growth.Maintaining balanced levels of the Foundation Elements (Ca, KH Mg) creates optimal water conditions for promoting strong and healthy coral growth. Reef Foundation A is a Calcium Strontium complex for balanced formation of Coral Skeleton.Reef Foundation A: Contains Calcium, Strontium, and Barium according to the ratios found in coral skeleton.

Review: Good but expensive - Good product. But very expensive. Powder is better
Review: Good product - Very good product. red sea products are always good. 🥰😍 I use red sea products from long time all are working properly. This calcium ia super.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004E47QSC |
| Best Sellers Rank | #81,613 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,516 in Water Treatments |
| Brand | Red Sea |
| Brand Name | Red Sea |
| Customer Reviews | 4.6 out of 5 stars 244 Reviews |
| Global Trade Identification Number | 00730773220137 |
| Item Form | Liquid |
| Item Weight | 0.77 Kilograms |
| Liquid Volume | 500 Millilitres |
| Manufacturer | RED SEA FISH PHARM LTD. |
| Manufacturer Part Number | Red Sea Reef Foundation A Supplement (Ca |
| Model Number | Red Sea Reef Foundation A Supplement (Ca |
| Target Species | Fish |
| UPC | 730773220137 |

## Product Details

- **Liquid Volume:** 500 Millilitres
- **Item Weight:** 0.77 Kilograms
- **Item Form:** Liquid
- **Manufacturer:** RED SEA FISH PHARM LTD.
- **UPC:** 730773220137

## Images

![RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml - Image 1](https://m.media-amazon.com/images/I/81c7ZUzhmFL.jpg)
![RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml - Image 2](https://m.media-amazon.com/images/I/51FUuu6hZEL.jpg)
![RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml - Image 3](https://m.media-amazon.com/images/I/819bAaLQeGL.jpg)
![RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml - Image 4](https://m.media-amazon.com/images/I/61doThkf+vL.jpg)
![RED SEA FISH PHARM LTD. Reef Foundation A (ca/sr) - 500ml - Image 5](https://m.media-amazon.com/images/I/813S2x5uOnL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good but expensive
*by A***K on 15 July 2019*

Good product. But very expensive. Powder is better

### ⭐⭐⭐⭐⭐ Good product
*by N***R on 9 May 2023*

Very good product. red sea products are always good. 🥰😍 I use red sea products from long time all are working properly. This calcium ia super.

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**Shop now:** [https://www.desertcart.co.uk/products/76549716-red-sea-fish-pharm-ltd-reef-foundation-a-ca-sr](https://www.desertcart.co.uk/products/76549716-red-sea-fish-pharm-ltd-reef-foundation-a-ca-sr)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-14*