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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
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Description
Sera Koi Professional Spirulina Color FoodProfessional food for perfect colors, ideal growth and healthy fishDue to a particularly high amount of Spirulina carotene and Haematococcus algae rich in astaxanthene, sera KOI Professional Spirulina Color Food ensures unique color depth along with clear separation of the color zones and silky gloss. White patterns do not become unsightly yellow but remain bright white. High quality protein ensures balanced and healthy growth. The unique co extrusion
Professional food for perfect colors, ideal growth and healthy fishDue to a particularly high amount of Spirulina carotene and Haematococcus algae rich in astaxanthene, sera KOI Professional Spirulina Color Food ensures unique color depth along with clear separation of the color zones and silky gloss. White patterns do not become unsightly yellow but remain bright white. High quality protein ensures balanced and healthy growth.
The unique co-extrusion process allows combining differently treated ingredients. The ring contains high quality natural ingredients such as Spirulina and Haematococcus for unique colors and an appropriate diet. The core consists, among others, of essential vitamins, minerals and trace elements for healthy growth and a strong immune system.
sera KOI Professional Spirulina Color Food can be fed throughout the year above 8°C (46°F) water temperature.
sera Koi Professional – the first co-extruded food for Koi
1. Ring
Food blend optimized for every season, for a nutrition according to the natural requirements of Koi.
2. Core
Contains the sera Vital Immue Protect Formula, manufactured in a prticularly gente low temperature process.
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
4.4 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Perfect fit every time
Color: Silver, Size: 30W x 30L
These original 874’s are the real deal. Stocked up during the sale and got them for my husband. He loves all the colors and the durability of these pants is incredible. He still has some from 14 years ago!
But he wanted a few new ones- and they had more colors so I stocked up and surprised him when I told him how much they cost during the sale.
These pants never wrinkle. I wash them hot and air dry- no wrinkling or shrinking. They look great. They’re sewn to perfection. The quality is there and has been for years, a reason my husband only wears these.
Quality, value, durability, style, fit. Great for all seasons, they’re not too heavy or too light. Great functionality- pockets for everything . Great even in summer - they are very breathable. Perfect fit every time. Great for heavy road construction or just going for a hike.
Highly recommend!
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Reviewed in the United States on November 22, 2025
★★★★★ 5
Good work pants
Color: Dark Brown, Size: 46W x 32L
run small / snug I would recommend getting next size up minimum.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Durable and great fit
Color: Black, Size: 32W x 34L
Great fit and quality, nice color, this are a work pants, pretty durable and they haven’t fade, also they don’t shrink or wrinkle
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Reviewed in the United States on April 15, 2026
★★★★★ 4
Run small, size it up
Color: Mushroom, Size: 32W x 30L, Color: Mushroom, Size: 32W x 30L
They go small, Im 5'8", 165lbs, usually 32x30 fits just rigth in most brands Levis, Izod, whatever, can't even close the zipper on this one, my dingus prints in the front if I manage to close it, I will try a 34 or even 36, if you want one, size it up. Length is right.
Anyway, the pant is good, sturdy looking material, is not soft but nothing uncomfortable probably gets right after break it in, reinforced stitches on pockets. I think they would work great for a technician, salesman or an engineer, those jobs where you have to look like a human being with a polo shirt but sometimes needs to do something without ripping your pants while crouching or for daily abuse of the regular Joe, will try another that fits
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Best Value For The Money
Color: Black, Size: 36W x 32L
My grandson uses these for work. Well-made and durable. Worth the price. Fit is comfortable.
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Reviewed in the United States on April 13, 2026