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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
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Description
knockout herbicide CrystalClear KnockOut PlusCrystalClear KnockOut PLUS is an all natural, fish treatment that eliminates PLUS prevents external single celled parasites or fungal infections. KnockOut PLUS works extremely well with pond fish species such as koi and goldfish and unlike most fish treatments, there is no need to remove your filters before treatment. Furthermore, when used routinely, KnockOut PLUS works as a strong preventative treatment. Use anytime new fish are added, during pond
CrystalClear® KnockOut™ PLUS is an all natural, fish treatment that eliminates PLUS prevents external single-celled parasites or fungal infections. KnockOut™ PLUS works extremely well with pond fish species such as koi and goldfish and unlike most fish treatments, there is no need to remove your filters before treatment. Furthermore, when used routinely, KnockOut™ PLUS works as a strong preventative treatment. Use anytime new fish are added, during pond clean-outs, during spring start-up or any time fish are stressed.
KnockOut™ PLUS is a broad spectrum treatment for a variety of parasites including ichthyophthirius (Ick), sporozoan parasite, dinoflagellate infections as well as fungi such as saprolegnia, achlya, leptomitus and pythium. May be used with most invertebrates including snails.
KnockOut™ PLUS is a broad spectrum treatment for a variety of parasites including ichthyophthirius (Ick), sporozoan parasite, dinoflagellate infections as well as fungi such as saprolegnia, achlya, leptomitus and pythium. May be used with most invertebrates including snails.
- 7 Day Treatment
- Remedies Ich, Parasites, Bacterial Infections & Fungus
- All Natural, Safe for Fish, Plants & the Pond's Ecosystem
- Prevents Future Infections
Dosage Rate
Use 1 fl oz of KnockOut™ PLUS per 60 gallons.
8 fl oz bottle treats up to 960 gallons.
128 fl oz / 1 gal bottle treats to to 7,680 gallons.
Standard Application Rate
Shake well before using. Upon discovery of infection, apply daily for 7 days. When there are no visible signs of infection, it is recommended to continue treatment daily for an additional 3 days to ensure infection will not return. Disperse over the majority of the surface area of the pond.
Persistent Problem Application Rate
Shake well before using. For infections that last more than 7 days after standard application, treat twice per day. Apply once in the morning and once in the evening. Do not apply as a bath application. KnockOut™ PLUS works best as an in-pond additive.
Preventative Application Rate
Treat daily for 7 days anytime new fish are added, during pond clean-outs, during spring start-up or any time fish are stressed.
Product Notices
Do not use other chemicals in pond while treating with Knockout™ PLUS.
Use 1 fl oz of KnockOut™ PLUS per 60 gallons.
8 fl oz bottle treats up to 960 gallons.
128 fl oz / 1 gal bottle treats to to 7,680 gallons.
Standard Application Rate
Shake well before using. Upon discovery of infection, apply daily for 7 days. When there are no visible signs of infection, it is recommended to continue treatment daily for an additional 3 days to ensure infection will not return. Disperse over the majority of the surface area of the pond.
Persistent Problem Application Rate
Shake well before using. For infections that last more than 7 days after standard application, treat twice per day. Apply once in the morning and once in the evening. Do not apply as a bath application. KnockOut™ PLUS works best as an in-pond additive.
Preventative Application Rate
Treat daily for 7 days anytime new fish are added, during pond clean-outs, during spring start-up or any time fish are stressed.
Product Notices
Do not use other chemicals in pond while treating with Knockout™ PLUS.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Great suit!
Color: Black, Size: Medium
Looks super nice! For the price, it is definitely worth it. The fabric looks and feels great and the size range is good.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Perfect for a wedding! Everyone loved it
Color: Deep Blue, Size: XX-Large
I bought this suit set for our wedding and it was a huge hit everyone loved how it looked! The slim fit is perfect and looks very sharp and modern. The material is great quality and it comes with everything you need, making it an incredible value. My kids got compliments all night!
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Great quality
Color: Black, Size: X-Small
Fit my son perfect. Ordered XS he’s 5’5” 128 lbs. pants fit great, they weren’t too big or too long. He felt comfortable and got many complements. Tie color comes random not black like the picture.
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Reviewed in the United States on May 19, 2026
★★★★★ 4
Waist is big. I weigh 238lbs. And got what said was 215-230lb.
Color: Black, Size: XX-Large
Everything fits good, except the waist was about 2-3 sizes to big.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Great value for a one-time event! Perfect for graduation.
Color: Black, Size: Large, Color: Black, Size: Large
I bought this suit for my son's graduation, and it was exactly what we needed. Since he will probably only wear it once, I didn't want to spend a fortune at a high-end department store. For the price, the quality is surprisingly good; it looked sharp and he received a lot of compliments during the ceremony. We ordered a size Large (L) based on their sizing chart, and it was true to size and fit him perfectly. The fabric is lightweight but doesn't look cheap at all, making this a fantastic, excellent cost-benefit choice if you are looking for an option for a one-time event. Highly recommended!
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Reviewed in the United States on May 18, 2026