Defension-M A premium strength marine fish conditioner designed to protect fish during handling, transport, and acclimation. Formulated with advanced non-acidic ingredients, Defension-M enhances the slime coat, soothes stress, and supports recovery from surface abrasions, all while being completely compatible with reef aquariums and invertebrate systems. Overview ADVANCED SLIME COAT PROTECTION - Provides a soothing protective coating that supports healing, reduces handling stress, and aids recovery in marine fish. REEF AND INVERTEBRATE COMPATIBLE FORMULA - Designed for use with all live corals, invertebrates, and macroalgae—ideal for reef, marine, and brackish aquariums. REDUCES AMMONIA STRESS DURING TRANSPORT - Protects fish during bagging, acclimation, and water changes by minimizing ammonia-related stress and surface damage. SUPPORTS HEALTHIER AQUARIUM CONDITIONS - Helps maintain fish health while supporting biological filtration—does not degrade water quality or reduce redox. AMERICAN-MADE EXCELLENCE - Brightwell Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced, superior-quality solutions to elevate the vibrancy and health of your aquarium.
