Fauna Marin RTN/STN X - Protective Coral Treatment for Tissue Necrosis in Reef Aquariums

Few things are more devastating in reef keeping than watching healthy corals suddenly begin losing tissue. Rapid Tissue Necrosis (RTN) and Slow Tissue Necrosis (STN) can quickly affect valuable coral colonies, making early intervention critical.

Fauna Marin RTN/STN X is a reef safe protective treatment developed to help combat tissue necrosis in corals while supporting their natural defenses. Suitable for SPS, LPS, soft corals, and sea anemones, RTN/STN X may be used directly within the aquarium when used as directed.

What Are RTN and STN?

RTN (Rapid Tissue Necrosis) and STN (Slow Tissue Necrosis) are serious conditions that can cause coral tissue to recede or die over a short period of time.

Signs may include:

• Rapid tissue loss in SPS corals

• White exposed skeleton appearing suddenly

• Tissue recession beginning at the base of corals

• Reduced polyp extension

• Declining coloration and overall coral health

Early treatment is often essential when tissue loss is observed.

Why Choose RTN/STN X?

• Protective treatment for coral tissue necrosis

• Supports the coral's natural defenses

• Suitable for SPS, LPS and soft corals

• Reef safe when used as directed

• Used directly in the aquarium

• Compatible with UV sterilizers and protein skimmers during treatment

• Trusted premium formula from Fauna Marin

Recommended Use

• Dose 15 ml per 100 liters (26 gallons) daily.

• Recommended treatment period is 7 to 10 days.

• Add directly into a high flow area of the aquarium.

• Activated carbon should be removed during treatment.

• Always follow the manufacturer's instructions before use.

Specifications

• Aquarium Type: Saltwater Reef Aquariums

• Treatment Type: Coral Protective Treatment

• Suitable For: SPS, LPS, Soft Corals and Sea Anemones

• Application: In Tank Treatment

• Manufacturer: Fauna Marin

Reef Keeping Tip

Stable alkalinity, proper nutrient management, and consistent water parameters are essential for maintaining healthy corals. Regular testing and early intervention can make a significant difference when coral stress is observed.

Pairs Well With

• Alkalinity Test Kits

• ICP Water Analysis Tests

• Coral Foods

• Dosing Systems

• Calcium and Magnesium Test Kits

• Reef Aquarium Supplements

Why Buy From Infinity and Beyond Aquatics?

We're hobbyists first. We carefully select premium aquarium products while providing educational resources to help our customers succeed.

• Family owned and operated

• Premium reef aquarium products

• Responsive customer support

• Secure checkout

• Fast order processing