METHYLENE BLUE

EIHO Methylene Blue is a highly concentrated, pharmaceutical-grade treatment designed to protect your fish from a variety of common external ailments. It acts as a powerful anti-fungal and anti-parasitic agent, specifically targeting persistent issues like egg fungus (Saprolegnia), white spot (Ichthyophthirius multifiliis), and common gill diseases. Whether you are managing a freshwater setup or a marine tank, this zinc-free formula is a staple in the "medicine cabinet" of professional breeders and hobbyists alike.

Beyond just treating infections, EIHO Methylene Blue plays a unique role in respiratory health. It is exceptionally effective at improving oxygen circulation within the fish's bloodstream. This makes it an invaluable tool for reducing the effects of Nitrite (NO2) toxicity—often called "brown blood disease"—which can occur after long periods of transportation or in newly set-up tanks where the biological cycle is still stabilizing.

Why You Need This

We’ve all been there—you spot a fuzzy patch on a clutch of eggs or notice your favorite fish struggling to breathe. Here is why EIHO Methylene Blue is the reliable fix for those stressful moments:

• Protect Your Next Generation: It prevents fungus from spreading across fish eggs, ensuring a much higher hatch rate for breeders.

• Combat Labored Breathing: If your fish are gasping at the surface due to Nitrite ($NO_2$) spikes, this helps their blood carry oxygen more effectively.

• Stop the "Itch": It targets skin sliminess and mass white spot infections that cause fish to scratch against decor.

• Safe Shipping Recovery: It acts as a mild sedative and metabolic booster for fish arriving after a long journey, easing their transition into a new home.

Instructions

Using Methylene Blue is straightforward, but because it is so effective, you want to follow these steps to keep your main tank's balance intact:

1. Prep Your Space: It is always best to use a separate quarantine or "hospital" tank. Methylene Blue is a strong dye and will stain silicone, light-colored gravel, and equipment.

2. Shake it Up: Give the bottle a good shake to ensure the concentration is even.

3. Dose the Water: Add 1 capful (5ml) for every 50 liters of water. This creates a concentration of approximately 2mg/L.

4. Monitor and Repeat: For persistent diseases, you can add an additional dose on the 4th and 7th days. For hatcheries, additional doses on the 3rd and 5th days help keep eggs pristine.

5. Pause Filtration: Remove any activated carbon and turn off UV sterilizers during treatment, as these will remove the medication before it can work.

Expert Tip: Think of Methylene Blue like a "blue bath." If you have a fish with a specific fungal patch, you can perform a short 30-minute "dip" in a separate bucket at a slightly higher concentration before returning them to their tank. This provides a concentrated burst of healing without staining your entire display.

FAQ

Is EIHO Methylene Blue safe for my plants?

No, Methylene Blue is quite tough on live plants and will likely damage them. We recommend using this product in a bare-bottom hospital tank or a dedicated breeding container rather than a lush aquascape.

Will this affect my biological filter?

Yes, it can be harmful to beneficial bacteria like Nitrosomonas and Nitrobacter. To keep your cycle safe, always treat your fish in a separate quarantine tank so your main filter remains healthy.

Is it safe for shrimp and other invertebrates?

While Methylene Blue is generally safer than copper-based medications, it should still be used with caution around sensitive shrimp. Always move the affected fish to a separate treatment area to avoid any risk to your clean-up crew.

How do I get the blue color out of my water after treatment?

The easiest way is to perform a series of water changes and re-insert high-quality activated carbon into your filter. The carbon will "soak up" the remaining pigment quite quickly.

Can I use this for both Saltwater and Freshwater fish?

Absolutely! It is highly effective for both environments. Just remember that in reef tanks, the staining property can be permanent on porous "dry rock" or "live rock," so the quarantine tank rule is especially important here.

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