Brightwell Aquatics Ionic Strontium Reef Supplement, 500 mL Concentrated Formula

Brightwell Aquatics Strontion is a 500 mL ionic strontium supplement for restoring and maintaining strontium levels in reef aquariums.

• 500 mL bottle — supplies strontium as part of a reef aquarium dosing routine.
• Over 50% stronger than most competing products — delivers a concentrated supplementation option.
• No phosphate, silicate, EDTA, or gluconate — avoids these unwanted formula additions.
• Made with purified water and pharmaceutical-grade ingredients — provides a defined ingredient standard.
• Made in the USA and formulated by a marine scientist — developed for reef-building organisms.

Strontium occurs naturally in seawater and plays a role in the development of aragonite skeletons. Reef aquariums with strong lighting, fast growth, or dense coral populations may need particular attention to strontium levels. Strontion is made for use in a complete reef dosing routine to support stable conditions for corals and other calcifying invertebrates.

What does Strontion support in a reef aquarium?

Strontion supplies strontium for aragonite skeletal development in corals, clams, tube worms, and other reef invertebrates. Strontium may support coral growth and may promote skeletal material formation through biological and chemical processes. The formula is intended for reef-building organisms, including both SPS and LPS corals.

• Provides strontium for organisms that form aragonite skeletons.
• Designed for SPS, LPS, and other reef invertebrates.

How concentrated is the formula, and what is in it?

Strontion is over 50% stronger than most competing products, and its concentration is intended to make supplementation more effective and economical. It uses high-purity strontium salts in an ionic formula, without unnecessary organic compounds or additives that can affect water chemistry. The formula contains no phosphate, silicate, EDTA, or gluconate.

• High-purity strontium salts in an ionic form.
• Made with purified water and pharmaceutical-grade ingredients.

What strontium range suits calcifying reef life?

Maintain strontium within the 8–12 ppm range to support conditions for calcifying invertebrates. Natural seawater contains around 8 ppm strontium. Strontion is intended to help restore and maintain reef aquarium levels as part of a complete dosing routine; the product is not a standalone reef-care system.

• Target range: 8–12 ppm.
• Natural seawater level: around 8 ppm.

Which reef systems is Strontion made for?

Strontion is formulated for SPS-dominant, LPS, mixed reef, and invertebrate-heavy aquariums. It is especially relevant to systems with strong lighting, high growth rates, or dense coral populations, where calcifying organisms use strontium as they develop skeletal material. A marine scientist formulated the product, and Brightwell Aquatics makes it in the USA as part of its scientifically backed aquatic-care range.

• Suitable for SPS-dominant and LPS reef systems.
• Also made for mixed reefs and aquariums with many invertebrates.

Strontion suits reef aquarists who maintain calcifying corals, clams, tube worms, or other invertebrates and want an ionic strontium supplement in their established reef dosing routine. Its 500 mL format, concentrated formula, and intended 8–12 ppm range make it a fit for reef systems focused on supporting aragonite-forming life.