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ARM Calcium Reactor Media Coarse

Marsoni M251S
Sale price$59.95
Pay 4 payments of $14.99 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
ARM Calcium Reactor Media CoarseARM Fine has nearly 50 times the strontium of other brands (7390 ppm). It also contains 381,000 ppm Calcium, 590,000 ppm Carbonate, and 1050 ppm Magnesium. ARM has the highest solubility of any reactor media available (metastable at 8. 2) so typical CO2 consumption is much lower.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
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Nola
Port Orchard, US
★★★★★ 4
Nice casual looking sweater
Size: Small, Color: Pure Black
I purchased the black/cream inset sweater in a small. I usually wear a small. I fits loose, but NOT baggy. I like the loose fit. The sweater feels so soft. Nice looking sweater. Very happy with the sweater, but could have ordered a medium for a boxier fit.
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Reviewed in the United States on May 20, 2026
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Constance Law
Lexington, US
★★★★★ 5
Good quality & trendy color sweater
Size: Large, Color: Pure Apricot
This sweater is very soft, light and very suitable for keeping mild warm at the temperature of 20c or inside an air conditioning room. Particularly, the trendy color for 2026 in brown suede jacket, this sweater is real good matching item! I like it! 😍😍😍
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Reviewed in the United States on February 27, 2026
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BETTY HILDRETH
Lexington, US
★★★★★ 5
very stylish
Size: Medium, Color: Pure Apricot
true to size. very comfortable.
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Reviewed in the United States on June 1, 2026
C
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Cap47
Bozeman, US
★★★★★ 5
Great Material
Love the sweater. So soft.
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Reviewed in the United States on May 23, 2026
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Nomad Fan
West Palm Beach, US
★★★★★ 5
Perfect!
Size: Medium, Color: Pure Black
Well made, soft comfortable and looks great.
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Reviewed in the United States on June 6, 2026

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