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FishOfHex Aquatics

4.5 (123)

Red Sea RSK-300 Co2 Attachment (Works With DC)

Name: FishOfHex Aquatics Red Sea RSK-300 Co2 Attachment (Works With DC) - Red Sea RSK-300 Co2 Attachment (Works With DC)
Brand: FishOfHex Aquatics
SKU: 39450081820726
Price: 24.99 USD
Availability: InStock
Rating: 4.8889 (9 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$24.99

Quantity

Color

Black

Quantity

My personal lid attachment turns any skimmer into a recirculating Co2 scrubber.

Reviews

4.9

9 ratings

Red Sea RSK – 300 CO2 attachment

Great product fast shipping no problems here

Douglas · May 8, 2026

Rsk 300 co2 attachment

Awesome job works great

Patrick · March 1, 2026

Awesome product

Couldn’t get my pH above 8 based on CO2 levels in the house - now it’s 8. 1-8. 4 and dissolved oxygen (measured before and after) has barely dipped (my only concern). Highly recommended.

John · November 10, 2025