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🪸 Elevate your reef’s vitality with science-backed alkalinity mastery!
Seachem Reef Carbonate 500ml is a highly concentrated (4,000 meq/L) blend of carbonate and bicarbonate salts designed to restore and maintain optimal alkalinity (KH) in reef aquariums. Its unique formulation stabilizes pH around 8.3-8.4, promoting healthy coral growth without depleting essential minerals like calcium and magnesium. Trusted by reef enthusiasts for easy dosing and reliable results, it’s a must-have for sustaining vibrant, thriving coral ecosystems.
| ASIN | B0002DGM5C |
| ASIN | B0002DGM5C |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #40,703 in Pet Supplies ( See Top 100 in Pet Supplies ) #393 in Aquarium Water Treatments |
| Brand Name | Seachem |
| Color | clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (411) |
| Date First Available | June 9, 2004 |
| Date First Available | June 9, 2004 |
| Directions | Beginner Use 1 capful (5 mL) per 80 L (20 US gallons) twice a week. Best if diluted into a cup of freshwater, then added. Check alkalinity every 2 weeks and adjust amount or frequency accordingly. Advanced Check alkalinity (use MultiTest™ Marine pH & Alkalinity to test alkalinity levels), then follow addition regimen above until alkalinity is adjusted to 4–5 meq/L. Each mL contains a minimum of 4 … |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 7.6 x 2.1 x 1.5 inches |
| Item Package Dimensions L x W x H | 7.48 x 2.36 x 2.28 inches |
| Item Weight | 1.35 Pounds |
| Item model number | 663 |
| Item model number | 663 |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer | Seachem Laboratories, Inc. |
| Material | cotton |
| Model Name | Reef Carbonate 500ml |
| Number of Items | 1 |
| Product Dimensions | 7.6 x 2.1 x 1.5 inches; 1.35 Pounds |
| Size | 100 mL, 250 mL, 500 mL, 2 L, 4 L |
| Specific Uses for Product | Active |
| Target Audience Keyword | fish; all fish |
| Warranty Description | As Labeled |
J**O
Would recommend
Works perfect. Directions are easy and it didn’t mess with any of my other elements
C**S
It is really good I will be getting more
This is all I use now it works perfect never had any trouble with any product from these guys I would highly recommend if your receiver
D**E
As described
Best alk supplement for the price. I have used it in my reef tank and it was great. Fish are okay. PH level depends on dosing amount. Product does not leak and is safe use. Functions good.
S**I
Good product
Does what it is supposed to do. I have found when calcium is high, alkalinity is low and when alkalinity is high, calcium is low; so maybe keep that in mind. Other than that I ve been using Seachem products since I started in this hobby and so far have no regrets. Amazon has the most realisting prices especially with prime shipping. LFS's want WAY too much $.
P**N
Trusted brand, good price
Good price for reef tank minerals.
D**H
Seachem
Love seachem products
A**R
Good
As described good price for quantity
E**S
As described
As described
A**R
Works great for bumping up my alkalinity. I just recommend starting with very small doses and increasing them slowly
A**R
Lid was loose, and white powdery crust was all over the bottle.
Trustpilot
5 days ago
4 days ago