Free shipping, tax included

Arrives within 7 days.Learn more

NT LABS Aquarium Methylene Blue 100ml

$7.63 USD $7.63
Free shipping.
Coupon

 
This item is a subscription or a deferred purchase. By continuing, you agree to the Cancellation Policy and authorise charges to your selected payment method at the prices, frequency and dates shown on this page until your order is fulfilled or, where permitted, cancelled.

Pairs Well With

30-Day Price Guarantee

  • Free 30-Day Returns
  • Ships from our US warehouse (delivered in 3–7 days)
  • Found a lower price? Let us know and we will match it!

1-Year + 180-Day Warranty

So that you can buy with confidence, we provide a comprehensive warranty on every product.

  • Warranty Period: This product comes with a 12-month standard warranty.
  • Extended Warranty: Buy from our official website and you can register directly for the extended warranty, adding a further 180 days of coverage.

For more details, see the [Warranty Policy].

After your purchase, be sure to complete [Product Registration] to activate your warranty.

Free shipping

  • Free Shipping:
    All orders ship free of charge and usually arrive within 7 days.
  • 30-Day Return Guarantee:
    If you are not satisfied, you may return or exchange the item within 30 days of delivery.
  • Shipping Protection (recommended):
    For extra peace of mind, we recommend adding Seel Shipping Protection at checkout. With this coverage you can file a claim directly for shipping delays, loss or damage, and receive faster handling and stronger protection.

Please note that if shipping protection is not added, compensation is handled according to the carrier's rules and the applicable conditions. We are always happy to help with logistics inquiries, but the scope of compensation follows the carrier's policy.

For full details, please see the [Shipping Policy] and [Return Policy] pages.

Features

Specifications

Product Specifications Value

Product Name

NT LABS Aquarium Methylene Blue 100ml
Model Number 8782643921153
Age Range 5+
Shipping Free shipping
Delivery Time 1–5 days

Reviews (417)

Customer Reviews

Based on 12 reviewsVerified Checkmark
11
417
0
0
0
See all reviews
04/07/2026
Eddy Raw
04/07/2026
Amazon Customer
04/07/2026
ris999ing
04/07/2026
Shimazori
04/07/2026
Fussara

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Google Pay
  • iDEAL Wero
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa
  • Klarna
  • Afterpay

Your payment information is processed securely. We do not store credit card details, nor do we have access to your credit card information.

Suitable for coldwater & tropical aquariums. Treatment for bacterial, fungal, and some external protozoan parasitic infections of fish, fry, and eggs.

When to Use:

  • When fish, fry, or eggs show signs of fungal infections such as fluffy cotton wool-like growths. If fish have grey, velvety film over their body or have excess mucus. If fish have red open wounds, ulcers, missing scales, rotting fins, or eroded mouth tissue. 
  • Methylene Blue can be used to treat bacterial, fungal, and some external protozoan parasitic infections. It is safe for use with eggs and fry. It is best used in a quarantine aquarium or treatment bath but can be added to the aquarium water, when transporting fish, or applied directly to wounds. 

Warning:

  • This product may kill live plants and shrimp if overdosed. 
  • This product will affect beneficial bacteria in the biofilter.
  • This product can stain skin, aquarium ornaments, and silicone.
  • Continue filtration during treatment but remove carbon. Carry out a 25% water change after finishing treatment, add NT Labs Filter Starter to the aquarium, and reapply carbon to the filter.
  • If applying directly to wounds, dab undiluted Methylene Blue on affected areas using a cotton bud.
  • Not for human consumption.

How to Use:

  • Calculate the volume of your aquarium in litres (length x width x depth (in cm)/1000). Alternatively visit: www.nt-labs.com/dosage-calculator and we will calculate it for you!
  • Shake bottle thoroughly before use.
  • Mix required dose of treatment with 1 litre of aquarium water. Add slowly to aquarium.
  • For a dip dose, see the label for the correct dosage rate.
  • Treatment can be repeated 4 days after last dose. If you feel a second dose is required, first check your diagnosis is correct, test your water quality using NT Labs Test Kits and carry out a 30% partial water change

Brand:
NT Labs
Category:
Additives & Medication
SKU:
NT467
Tags:
Additives & Medication: Medication, Parasitic Disease, Shipping: Weight, shoptok

You may also like