Fauna Marin Elementals Magnesium Aquarium Additive 1000 mL

Q: How often should magnesium be tested?

Magnesium should be tested weekly. Tanks with fast-growing stony corals may require more frequent testing.

Q: Can I mix this with other Fauna Marin additives?

Yes. Many reef keepers dose Fauna Marin Elementals products together to maintain balanced and stable water chemistry.

Q: What happens if magnesium drops too low?

Low magnesium levels can lead to faded coral coloration, slower growth, and reduced polyp extension. Maintaining stability is essential.

Q: Can I overdose Fauna Marin Elementals Magnesium?

Yes. Avoid increasing magnesium by more than 100 mg/L per day, as overdosing can cause undesirable water chemistry swings.

Q: Is it safe for soft corals and LPS tanks?

Yes. Balanced magnesium levels are beneficial and safe for soft corals, LPS, and all reef aquarium types.

$28.86

in stock

UPC: 4260119451056

Add to wishlist

Fauna Marin Elementals Magnesium improves coral health by maintaining stable magnesium levels essential for calcium and alkalinity balance. This concentrated marine supplement keeps reef systems thriving with stronger coral skeletons and vibrant coloration.

Categories:

Aquarium Supplements

Maintenance & Accessories

Salt & Supplements

Description
Additional Information
Reviews

Fauna Marin Elementals Magnesium Aquarium Additive 1000 mL - Boost Coral Health

Reef tanks thrive when magnesium stays steady, and Fauna Marin Elementals Magnesium keeps that balance locked in place without drama. This supplement plays a key role in stabilizing calcium and alkalinity, which means stronger growth and brighter colors. You will even spot it listed alongside other pro-grade dosing products from Fauna Marin in the Aquarium Maintenance and Accessories area, right where serious reef keepers stock up.

Why Fauna Marin Elementals Magnesium Matters for Reef Balance

Magnesium fuels coral growth, supports red calcareous algae, and keeps alkalinity swings in check. Without enough of it, calcium precipitation creeps in, coral skeletons weaken, and tanks start behaving like they forgot to drink their morning coffee. Even seasoned reef keepers still test weekly and dose consistently; you will find this product near All Supplements and Salt inside the Aquarium Supplements section for that reason.

Dosing Guidance for Fauna Marin Elementals Magnesium

Think precision, not guessing.

Use 50 mL per 26 U.S. gallons to raise magnesium by about 100 mg/L
Never increase more than 100 mg/L in a day
Cap daily dosing at 100 mL per 26 U.S. gallons
Test before and after adjusting

Even though dosing feels simple, consistency wins every time.

Tips for Stable Results

Store the bottle in a cool, shaded spot. Close it tight after each use to avoid evaporation changes. Reef chemistry shifts faster than a trade deadline rumor, so frequent testing helps you stay ahead of swings.

Target Water Parameters

Magnesium range: 1300–1350 mg/L
Salinity reference: 35 ppt (standard reef range)

How Fauna Marin Elementals Magnesium Supports Coral Success

Balanced magnesium keeps corals building structure effortlessly. It also helps keep nuisance precipitation out of pumps and heaters. When reef systems rely on automation or two-part dosing, keeping magnesium dialed in gives your system the backup it deserves.