Dr Tim's First Defense MARINE Size:4oz treats 908L Fully assembled and ready to

Fully assembled and ready to use

Gravity-Fed Setup Cleaning Cycle:

The shaft and bushings are made of the toughest durable ceramic

Integrated programming to generate waves

Dr Tim's First Defense MARINE Size:4oz treats 908L Fully assembled and ready to2oz & 4oz bottles are sold in packs of 6 8oz bottles are sold in packs of 4 Dr Tims First Defense Stress Relief & Immune Support Give your fish the protection they need during stressful situations with Dr Tims First Defense. This unique formula combines vitamins and immune boosters to strengthen natural defenses, promote healing, and support recovery from wounds or stress. Reduces stress when introducing new fish or during poor water conditions Boosts