Methylene Blue Tablets 90g
Protect your ornamental fish with Methylene Blue Tablets, a trusted aquarium treatment that helps maintain a healthier aquatic environment. Suitable for freshwater and marine ornamental fish, these easy-to-use tablets are ideal for hobbyists and professional breeders alike.
Methylene Blue has long been recognized as one of the most effective treatments for improving water quality and supporting fish during periods of stress, transportation, breeding, and disease recovery.
Whether you’re caring for Betta fish, Goldfish, Guppies, Discus, Koi, Cichlids, Tetras, Arowana, Shrimp tanks, or breeding tanks, this product offers convenient dosing and reliable performance.

Key Features
✔ Easy-to-use tablet formula
✔ Helps maintain a healthier aquatic environment
✔ Suitable for freshwater and marine ornamental fish
✔ Ideal for breeding tanks, quarantine tanks and hospital tanks
✔ Supports fish during transportation and recovery
✔ Convenient dosing with minimal measuring required
✔ High quality formulation
✔ Passed quality inspection
Suitable For
- Betta Fish
- Goldfish
- Guppies
- Discus
- Arowana
- Koi
- Tetras
- Mollies
- Platies
- Swordtails
- Angelfish
- Corydoras
- Shrimp tanks
- Amphibian breeding tanks
- Reptile breeding tanks
- Fish ponds
Directions for Use
Daily Treatment
- Add 10 tablets for every 100 litres of water
- Dose once daily
- Continue treatment for 3 consecutive days
Severe Conditions
- Continue treatment for an additional 3 days if necessary.
During Treatment
- Stop feeding.
- Maintain strong aeration throughout treatment.
- Monitor fish regularly.
Water Volume Calculation
Calculate your aquarium volume using:
Length (cm) × Width (cm) × Height (cm) ÷ 1000 = Litres
Example:
60 × 30 × 36 ÷ 1000 = 64.8 Litres
Precautions
- Water will turn blue after application. This is completely normal.
- Follow the recommended dosage.
- Switch off filtration during treatment.
- Restart filtration after 24 hours.
- Do not mix with other aquarium medications or water treatment additives.
- If using another treatment, allow at least 2 days between applications.
- Keep out of reach of children.
- For ornamental fish use only.
- Not intended for human consumption.
Storage
- Store in a cool, dry place.
- Protect from direct sunlight.
- Keep container tightly sealed after use.
Product Specifications
| Specification | Details |
|---|---|
| Product Name | Methylene Blue Tablets |
| Main Ingredient | Methylene Blue |
| Form | Tablets |
| Net Weight | 90g |
| Suitable For | Freshwater & Marine Ornamental Fish |
| Shelf Life | 24 Months |
| Storage | Cool, Dry & Dark Place |
| Quality | Passed Inspection |
Brand: Weifang Shengnong Biotechnology
Weight: 90g
Condition: New
Disclaimer: This product is intended for ornamental fish only. Always follow the recommended dosage and monitor fish closely during treatment.
Why Choose Methylene Blue?
Methylene Blue is widely used by ornamental fish keepers because it helps maintain cleaner water during treatment periods and provides supportive care for fish under stress. It is especially popular among breeders for quarantine tanks, breeding tanks and hospital tanks where maintaining water quality is essential.
Why Every Aquarium Hobbyist Should Keep Methylene Blue Tablets
Methylene Blue Tablets are an essential addition to every aquarium keeper’s fish care kit. Whether you are maintaining a display aquarium, breeding Betta fish, raising fry, or setting up a quarantine tank, having a reliable water treatment product on hand allows you to respond quickly whenever your fish need extra support.
The convenient tablet format eliminates the need for measuring liquid medications, making dosing simple and consistent. Each tablet dissolves easily in water, turning the water a distinctive blue colour, which is a normal indication that the treatment is active.
Many ornamental fish breeders use Methylene Blue during quarantine, transportation, and breeding because it helps maintain a cleaner aquatic environment during stressful periods. It is suitable for a wide variety of freshwater and marine ornamental fish, making it a versatile treatment to keep in your aquarium cabinet.
At Betta4U, we understand the importance of maintaining excellent water quality for healthy fish. That’s why we carefully select quality aquarium products trusted by hobbyists and breeders. Whether you’re caring for a single Betta or managing multiple breeding tanks, Methylene Blue Tablets provide a convenient solution that’s easy to store, easy to dose, and ready whenever you need it.
Why Buy From Betta4U?
✅ Trusted Aquarium Specialist
✅ Fast Shipping
✅ Carefully Packed
✅ Genuine Quality Products
✅ Dedicated Customer Support
Package Includes
- 1 × Methylene Blue Tablets (90g)
Frequently Asked Questions (FAQ)
Is this suitable for Betta fish?
Yes. It is suitable for Betta fish when used according to the recommended dosage.
Can I use it in marine aquariums?
Yes. It is suitable for both freshwater and marine ornamental fish.
Why did my water turn blue?
This is a normal effect of Methylene Blue and indicates the product has dissolved into the water.
Should I keep the filter running?
No. Turn off the filtration system during treatment and restart it after 24 hours.
Can I use it together with other medications?
No. Leave at least a 2-day interval before using another aquarium treatment.
Related Aquarium Care Products
Complete your aquarium care routine with these products from Betta4U:
- Betta4U Pati Ketapang Booster – Natural blackwater extract with tannins, vitamins and minerals for healthier Betta fish.
- Betta4U Booster – Multi vitamins and minerals to support fish growth, immunity and vibrant colours.
- Betta4U Protection – Daily water conditioner that helps maintain cleaner water and supports fish health.
- Browse our complete collection of aquarium medications.
Learn More About Aquarium Fish Health
Want to learn more about aquarium fish diseases and proper fish care? These trusted resources provide useful information for aquarium hobbyists.
- Aquarium Co-op Fish Disease Guide
- Merck Veterinary Manual – Fish Diseases
- Wikipedia – Methylene Blue
Not sure what disease your fish has? Read our Complete Guide to Common Betta Fish Diseases before choosing a treatment.
https://betta4u.com/common-betta-fish-diseases/














