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Seachem Paraguard 100ml Freshwater & Marine Parasite Control

Quick Overview

ParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control produc...

Availability:Out of stock

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ParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control product available.

Suitable for Freshwater and Marine Aquariums

Unlike highly toxic and difficult to use formalin based medications,

ParaGuard™ contains no formaldehyde or methanol and will not alter pH.

ParaGuard™ employs a proprietary, synergistic blend of aldehydes, malachite green, and fish protective polymers that effectively and efficiently eradicates many ectoparasites (e.g. ich, etc.) and external fungal/bacterial/viral lesions (e.g., fin rot).

It is particularly useful in hospital and receiving tanks for new fish and whenever new fish are introduced to a community tank.


  • In the aquarium, use 5 mL (1 capful) to every 40 L (10 gallons*).
  • Repeat daily as required as long as fish show no stress.
  • For 1 hour dips, use 3 mL per 4 L (1 gallon*).
  • Dips may be extended if fish show no evidence of stress.

Not for use in aquariums containing invertebrates. 

Not suitable for tanks with reef/corals.

Additional Information

Brand Seachem
Barcode 000116060509
MPN 20722
Treats Aquarium Volume Upto 200 Litres

Customer Reviews

6 Item(s)

per page
Really good stuff Review by Dawn
I am really impressed with this, my cichlids had fin rot but after using this it cleared up really quickly. (Posted on 24/11/2017)
Best on the market. Review by Sylvia
I havnt had to use this yet, bought it just incase. I have other Seachem products that i wouldnt be without. Great products. (Posted on 23/08/2017)
Surprise in a bottle Review by Lukasz
Before you buy it read the label. This product is advertised as MARINE safe. This by no means equals REEF safe. Most soft corals will almost die with this stuff in the water. Snails will get serious kicking. Small critters in your live rock will go to heaven. Use it only in your quarantine tank, never in the main.
Otherwise great product for treating a wide range of issues ;-) (Posted on 14/09/2016)
Excellent service, will definitely use again. Review by Freda Hughes
Excellent service, will definitely use again. (Posted on 23/04/2015)
Fast acting Review by Tango
Very good and fast acting product. Simple to use and you only need a small amount. One not of CAUTION - CAREFULLY measure the amount you need to ensure you do not use too much. As description suggests, use the amount directed, then check for signs of stress (Posted on 14/05/2013)
Treatment for all types of illness. Review by Daniel
ParaGuard has been the ONLY medication I have used in my aquarium for the past couple of years. It's non-toxic and safe to all inhabitants of the tank - including my Assassin Snails and frogs.

It treats the dreaded Ich parasite effectively and quickly along with being able to radically cure external/internal bacterial infections and fungal infections too.

No need to quarantine or remove any plants, just dose the whole tank so your sure that the parasite has gone!

It's a good medication all round. It's a trustworthy brand and an effective remedy to any fish that encounter an illness. (Posted on 12/01/2012)

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Postage Information

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Orders over £30 are Delivered FREE!

Providing none of the items in your order require pallet delivery or are excluded from delivery promotions, we will give you free standard delivery. You can still upgrade this service if you wish, and will only pay the difference.


Pallet Deliveries are different.

For items that have to be sent by insured pallet or other special delivery, these are excluded from the standard delivery offer and instead follow a different system. Pallet deliveries are split into 2 tiers: tier 1 and tier 2. Pallet deliveries take 2-4 working days and cannot be tracked.


For pallet deliveries we will contact you to confirm the delivery address and delivery day before releasing the order.


Please note that the pallet delivery service is a drop at kerb only service, the drivers are not insured to handle goods into homes and you are required to dispose of the pallet.


Pallet Tier 1

This tier is for solo tanks and cabinets, or other solo high weight products that we can't send by a normal courier. We subsidies the majority of the true delivery cost for these items to offer the best value we can. The shipping cost for these is calculated at checkout.


Pallet Tier 2

New for 2020! We are proud to announce we now offer FREE mainland UK pallet deliveries for Pallet Tier 2. Pallet Tier 2 is for the larger full tank and cabinet sets, such as the beautiful Juwel Rio, Lido, Trigon and Vision ranges.

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