Magnesium Supplement Marine Aquarium 118 ml - Corals & coralline Additive raises magnesium, healthy growth, strengthens skeleton, prevents bleaching, for corals, algae, reef tank, saltwater

Targeted magnesium supply for corals – ARKA Magnesium was developed for the effective and lasting supply of corals in the marine aquarium. Ideal for reef tanks with measurable magnesium consumption and a targeted supplementation requirement. Important building block for growth and skeletons – Helps to prevent magnesium deficiency, supports healthy coral growth, strong skeletons and faster growth of coralline algae. For stable conditions in an established reef system. Stabilises calcium and pH in the marine aquarium – Magnesium supports the balance of key water parameters and helps to keep the chemical balance in the aquarium resilient. Ideal for aquarists focused on stable marine care. Compact size for nano reefs & targeted correction – The 118 ml bottle is ideal for smaller marine aquariums, beginners and precise top-up dosing. 1 ml per 100 l raises the magnesium content by 1.0 mg/l; the optimum is 1280–1380 mg/l. ARKA quality for safe coral supplementation – Manufactured to strict quality standards for consistently high purity and reliable use. Ideal for aquarists who want to control magnesium levels precisely and keep their reef system stable.