Sign in to unlock exclusive benefits
30-Day Free Returns*
Seachem ParaGuard is a highly effective treatment for controlling parasites and external infections in fish. Unlike traditional formalin-based medications, ParaGuard is safe for fish and filters as it is made of a unique aldehyde-based formula, which contains no formaldehyde or methanol. This does not alter the pH of the aquarium, making it a safer choice for the aquatic environment. Seachem ParaGuard is a specialized treatment that is especially useful in hospitals and receiving tanks for new fish or when introducing new fish to a community tank.
ParaGuard features a proprietary blend of aldehydes, malachite green, and fish-protective polymers that work together to target and eradicate a variety of ectoparasites, including ich (Ichthyophthirius), as well as external fungal, bacterial, and viral lesions like fin rot. ParaGuard's gentle yet effective formula ensures that it tackles common issues in new fish receiving tanks or new tanks without compromising the health of fish or the efficiency of the filter.
Quarantine Use
Preparation
Sensitive Fish

It is the best supplement to enhance my fish's appetite and boost their immune system. Also, my fish love the taste, and it's a great addition to any fish-feeding routine!
It's an excellent broad-spectrum treatment for my fish diseases. It effectively tackles external parasites and bacterial and fungal infections. I've seen noticeable improvements in my fish's health after using it.
It’s gentle yet effective againIt’s gentle yet effective against a wide range of infections.st a wide range of infections.
I've been using Seachem Paraguard for many years. I use it when my fish come down with Ich & it always gets rid of the parasites. With the combination of the medication, salt & a heater turned up to 95 degrees s(slowly increase the temperature day by day) by the end of the week my fish are cured. I also like this medication because even though it is blue it hasn't stained any of my decorations tubing gravel or anything else that could be sustainable to becoming stained. I called seachem & the woman I spoke with shared with me that this medication can be used for multiple purposes such as introducing new fish & other types of diseases that fish may aquire. Love Seachem products.
Use code: WELCOME10
To Get Instant 10% Discount on Your First Order!
Screen reader optimized
Clear flashes & reduces color
More focus & fewer distractions
Assist with reading & focusing
Enhances website's visuals
Loading subscription options…
Enter your email to claim your exclusive welcome discount.
For first-time customers only. We will send a verification code to your email.
We sent a 6-digit code to
Your code is ready to use. Apply it at checkout.
—
This referral discount is only available for first-time customers. Thanks for being a loyal shopper!