Fauna Marin RTN/STN X 500 mL

Fauna Marin RTN/STN X 500 ml – Coral Care That Steps Up When Things Get Rough

Fauna Marin RTN/STN X 500 ml is the reef keeper’s secret weapon when corals start showing signs of tissue recession. Whether it’s a sudden RTN (Rapid Tissue Necrosis) episode or the slow creep of STN (Slow Tissue Necrosis), this formula jumps in to help support coral health and maintain water stability.

How Fauna Marin RTN/STN X 500 ml Helps Your Coral Bounce Back

Corals don’t exactly raise a red flag when stressed. They just... melt. That’s where this product comes in. It helps balance your reef’s biology and gives your coral the fighting chance it needs to stabilize and recover.

Why reefers turn to RTN/STN X:

• Supports coral tissue integrity under stress

• Reinforces natural coral resilience

• Works on LPS, SPS, soft, and azoox corals

• Safe for fish, inverts, and cleanup crews

• Pairs well with Fauna Marin Bacto Therapy for extra biological support

Dosing Made Simple – No Guesswork Needed

Let’s be real: reefkeeping already comes with enough math. Luckily, using Fauna Marin RTN/STN X 500 ml is straightforward.

Suggested Dosing:

• Add 15 ml per 26 U.S. gallons daily

• Pair with 3 ml Bacto Therapy per 26 U.S. gallons

• Dose directly with a syringe or auto-dosing pump

• Stick to the plan—don’t overdose

• Double-check total system volume before adding

Pro tip: Run the treatment for 7–10 days, or longer if your reef still looks like it’s riding out a storm. Always follow Fauna Marin’s HTU guide for the best results.

This is a reef support product only. It’s not a medication and isn’t meant to treat or cure disease.

What’s In the Bottle?

Fauna Marin didn’t throw just anything in here. The mix includes ingredients selected to keep your tank balanced without disrupting your reef’s rhythm.

Key Ingredients:

• Purified water

• Zinc (trace level)

• Capsaicin extract (<2%)

These components work together to promote stability and clarity without introducing harsh compounds into your system.

Choose the Size That Fits Your Tank

Whether you’ve got a nano tank or a full-blown reef fortress, there’s a size for every setup:

• 500 ml – for light-to-medium reef loads

• 1000 ml – for multi-tank hobbyists

• 5000 ml – for commercial setups or large-scale reef systems