This site list melafix from two different venders, mars and pond care. big difference in priceing. are they the same?

I've used several different brand types of melafix and found that they work just the same.

Is it safe to use post-expiration? In other words does it turn toxic to fish or simply starts to lose the effectiveness?

I would think if this is not very much over date, like 6months or so, it would be fine. If it is still sealed, it will be like new or almost. If it is older, it probably, hate to say as this, but I would think it will be okay to use, and just be weaker or maybe not. If you are in doubt, I would buy a new one to be certain. In the past, they never put dates on anything, and now a days they do and the things were used and were okay. Best answers I can give you. Good luck with your issues.

I guess my butterfly goldfish has fin rot. How should I treat it? It is in a pond with other healthy fish.

If the other fish are healthy. Then you should remove it in to a isolation tank. Be sure to use the pond water when you fill it. There are instructional videos on YouTube that will show you how.

How is this different from regular strength? They both have 5% concentration in a 64 oz bottle.

My advice is to please ask a professional breeder for direction. Off the self purchases is "gambling" to me! Best wishes to you and the Fish :)

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

API MELAFIX Freshwater Fish Bacterial Infection Remedy 64-Ounce Bottle

API MELAFIX Freshwater Fish Bacterial Infection Remedy 64-Ounce Bottle

Product ID: 2417872

Details

Brand
API
Item Form
Liquid
Item Weight
4 pounds
Liquid Volume
64 fluid
Number of Packs
1

⏳Heals fins & wounds in ~7 days

🌿Natural tea tree extract formula

🧴64 fl oz powerful liquid remedy

S$151

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

🐠 Keep your aquatic community thriving with nature’s healing touch!

LARGE 64 OZ SUPPLY - Generous bottle size ensures long-lasting protection and treatment for your aquarium.
BOTANICAL POWERHOUSE - Harnesses natural tea tree extract for fast, effective bacterial infection relief.
AQUARIUM SAFE CLEAR - Won't harm biological filters, alter pH, or discolor water—pure peace of mind.
RAPID HEALING FORMULA - Promotes fin regrowth and wound repair within a week, keeping your fish vibrant.
PREVENTIVE TREATMENT USE - Use daily for 7 days to treat infections or 3 days to prevent disease in new fish arrivals.

API MELAFIX is a 64-ounce liquid antibacterial remedy formulated with natural tea tree extract to treat and prevent bacterial infections in freshwater fish. It effectively heals damaged fins, ulcers, and open wounds within a week without affecting aquarium water quality or filtration systems. Ideal for both treatment and preventive care, it supports a healthy, vibrant aquatic environment for all freshwater species.

Specifications

ASIN	B00026041M
Allergen Information	Apple Free
Best Sellers Rank	#56,556 in Pet Supplies ( See Top 100 in Pet Supplies ) #30 in Fish Medication & Health Supplies
Brand	API
Brand Name	API
Customer Reviews	4.6 out of 5 stars 345 Reviews
Global Trade Identification Number	00317163160114
Item Form	Liquid
Item Type Name	Aquarium Antibacterial Remedy
Item Weight	4 pounds
Liquid Volume	64 fluid ounces
Manufacturer	Mars Fishcare
Manufacturer Part Number	11P
Model Number	11P
Number of Items	1
Number of Packs	1
Pet Type	Fish
Target Species	Fish
UPC	317163160114 317163416112
Unit Count	64 Fluid Ounces

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

S$151

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews