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Description
Reef Potassium 250 mlPotassium Supplement for the Reef Aquarium Promotes Growth and Color Concentrated 100,000 mg L Potassium Potassium is a vital element that plays a key role in metabolic processes, protein synthesis, and the growth of corals and macroalgae. In systems where nitrogen and phosphorus are supplemented, the demand for potassium may increase. By using Reef Potassium, you can effectively boost potassium levels without introducing additional phosphates or
Potassium Supplement for the Reef Aquarium Promotes Growth and Color Concentrated 100,000 mg/L Potassium Potassium is a vital element that plays a key role in metabolic processes, protein synthesis, and the growth of corals and macroalgae. In systems where nitrogen and phosphorus are supplemented, the demand for potassium may increase. By using Reef Potassium™, you can effectively boost potassium levels without introducing additional phosphates or dissolved organics. In many reef aquariums, adding potassium can significantly improve the growth and coloration of corals and macroalgae, especially enhancing the vibrant red and pink hues in corals. Reef Potassium™ is perfectly compatible with the aquavitro® sentia™ dosing system, allowing you to maintain consistent potassium levels based on the specific needs of your aquarium. It can also be easily administered manually. The ideal potassium concentration typically falls between 380 - 400 mg/L. Reef Potassium™ consists of 10% elemental potassium. To ensure optimal nitrogen and phosphorus levels, use Reef Nitrogen™ and Reef Phosphorus™.Expires on 20 Nov 2029
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4.1 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 1
Wrong size on shirt’s tag and description!
Size: 16"-16.5" Neck 36"-37" Sleeve, Color: Dark Blue, Size: 16"-16.5" Neck 36"-37" Sleeve, Color: Dark Blue
We have ordered Van Heusen dress shirts in size 16.5 neck and 36”-37” sleeves for years. This shirt’s sleeves are 2-3” too short! The shirt is tagged wrong. I ordered the same size brand and shirt in a different color and you can see the difference in the sleeve’s length in the photo! Annoyed I need to return the defective item.
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Reviewed in the United States on April 6, 2025
★★★★★ 5
True to size
Size: 16"-16.5" Neck 36"-37" Sleeve, Color: Medium Blue
Ture to size. Fits well, easy to Iron, very nice and comfortable
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Good quality dress shirt
Size: 16"-16.5" Neck 34"-35" Sleeve, Color: Black
this is a wrinkle resistant regular fit shirt with a regular sized length in both arms and at waist. The style is dressy and it is of very good quality material. It is a regular cut and not slim. Very nice shirt I recommend
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Reviewed in the United States on December 31, 2025
★★★★★ 4
Good dress shirts
Size: 17"-17.5" Neck 36"-37" Sleeve, Color: Graphite
Good fitting, well built and comfortable.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Works for me!
Size: 15"-15.5" Neck 34"-35" Sleeve, Color: Hazy Blue
I needed a couple shirts for wearing under a sport coat, these will do nicely. I got them in Blue and Grey. As with all dress shirts, I’ll have to wash them to get the wrinkles out, I hit them with my portable steamer as well. They aren’t think enough to hold a good ironing unless you use spray starch, but for $20 I’m fine with that. The tag on the shirts said $60, I would be pretty disappointed if I actually paid $60 for them; but for $20 the value is good.
I’m 5’8” and 180, so got the Medium 15/15 1/2 Regular fit, it’s a great fit for me. They came out of the wash fine, and are soft to the touch. I would expect them to wear as expected for a $20 shirt, and think the durability will be fine.
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Reviewed in the United States on September 29, 2025