RTN/STN M 500 ml Fauna Marin

RTN/STN M 500 ml Fauna Marin: support for the coral microbiome

RTN/STN M 500 ml by Fauna Marin is a care formula designed for marine aquariums. It was developed to promote the aquarium’s natural balance and help create a more favorable environment for coral vitality.

RTN/STN M represents the new generation of RTN/STN X. This modernized and improved formula works by supporting the coral microbiome, meaning the collection of microorganisms naturally associated with their tissues and contributing to their biological balance.

The product is used directly in the aquarium in situations where corals show fragility, reduced vitality, or signs suggesting rapid or progressive tissue loss. Used according to Fauna Marin’s recommendations, it is designed for gentle and safe use in the marine aquarium.

What do RTN and STN mean in corals?

The term RTN, for “Rapid Tissue Necrosis,” refers to a very fast loss of coral tissue. The process can progress quickly and expose the calcium skeleton that was previously covered by living tissue.

The term STN, for “Slow Tissue Necrosis,” refers to a slower, progressive regression of tissue. This development can be harder to notice at first, as it may spread over several days.

These phenomena may be associated with a general weakening of the coral and an imbalance in its biological environment. RTN/STN M supports corals by helping maintain their microbiome and natural resistance mechanisms.

A modernized formula that succeeds RTN/STN X

RTN/STN M is presented by Fauna Marin as the modernized and improved successor to the RTN/STN X range. The new formula places particular emphasis on maintaining biological balance and supporting the coral microbiome.

The microbiome plays an important role in the exchanges between the coral and its environment. When it is disrupted, the coral can become more vulnerable to opportunistic microorganisms and show reduced resistance.

By helping preserve this balance, RTN/STN M supports corals during a period of fragility and helps maintain conditions suited to their well-being.

Which corals should RTN/STN M be used for?

RTN/STN M is intended for marine aquariums housing different types of corals. It can be used in a reef aquarium containing, in particular, SPS hard corals, LPS hard corals, or soft corals.

Its use is particularly suitable when several corals appear weakened or when the situation calls for action throughout the aquarium rather than a simple individual bath.

The product can also be part of a broader coral-support approach after signs of tissue regression appear, alongside identifying the initial cause of the problem.

RTN/STN M Fauna Marin dosage

Fauna Marin recommends dosing 15 ml of RTN/STN M per 100 L of water each day. The product should be poured directly into an area with strong water movement to ensure it is distributed throughout the aquarium.

The recommended usage period is 7 to 10 days. Use may be extended if the situation requires it.

The 500 ml bottle therefore allows for a complete use of about 10 days in a 300 L aquarium, or about 7 days in a 400 L aquarium.

How to use RTN/STN M in the aquarium

Shake the bottle before use, then measure the amount corresponding to the actual water volume of the system. Pour the daily dose directly into a strongly circulated area of the aquarium.

It is preferable to add it at roughly the same time each day. Rapid diffusion in the current helps distribute the product throughout the system.

The recommended duration is 7 to 10 days. Carefully monitor tissue changes, polyp extension, and the overall condition of the corals throughout the entire usage period.

Filtration management during use

Activated carbon must be removed for the entire duration of RTN/STN M use, as it could adsorb part of the formula’s components and reduce its effectiveness.

The protein skimmer, adsorbents, and UV sterilizer may continue to operate normally while using the product.

Complementary use with Bacto Therapy

Fauna Marin indicates that Bacto Therapy can be used alongside RTN/STN M during the same period. This combination aims to strengthen the support provided to the microbiome and the aquarium’s biological balance.

The recommended complementary dosage is 3 ml of Bacto Therapy per 100 L of water each day.

Composition of RTN/STN M

RTN/STN M is composed of water, natural plant extracts, trace elements, and preservatives.

Features of RTN/STN M 500 ml

Observe and protect corals during use

During use of RTN/STN M, inspect the affected corals daily. In particular, monitor the boundary between living tissue and areas where the skeleton has become visible.

When tissue loss progresses rapidly on an isolated branch, it may be necessary to remove the affected part or make a frag in an area that is still healthy. The equipment used should be clean so as not to transfer microorganisms between colonies.

Remove detached tissue fragments and visible organic debris from the aquarium. This precaution limits their spread and prevents them from settling on other corals.

Also check that no neighboring coral is causing burns through contact or via stinging tentacles. Water flow directed too strongly can also irritate already weakened tissue.

Precautions for use

RTN/STN M is intended exclusively for use in marine aquariums. It must not be inhaled or swallowed. Avoid contact with skin and eyes.

Keep the product out of reach of children. Always follow the indicated dosage and read the information on the label before first use.

After the bottle has been fully used, rinse the container and dispose of it in accordance with local waste and recycling regulations.

Why choose RTN/STN M 500 ml Fauna Marin?

RTN/STN M 500 ml Fauna Marin is a complete care solution for supporting weakened corals and their microbiome directly in the reef aquarium.

Its simple dosage of 15 ml per 100 L, its 7 to 10 day usage period, and its compatibility with protein skimmer and UV sterilizer operation make it easy to integrate into aquarium maintenance.

Thanks to its modernized formula, including natural plant extracts and trace elements, RTN/STN M promotes coral vitality and helps maintain a stable biological environment.