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Ships within 48 hours · Estimated delivery Jun 19 - Jun 24
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Description
Reef Code A - Balanced Calcium & Alkalinity System - Part A (Calc.) 2LOverview The calcium bearing component of a two part method for dosing calcium and carbonates (the substances largely responsible for increasing alkalinity (buffering capacity)) in the same ratio as that found in natural seawater. Ionically balanced with respect to natural seawater concentrations of calcium and carbonates when used in equal amounts with Reef C? de B. Benefits reef building organisms such as corals, clams, calcareous algae, etc.
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Best in 7 days
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Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 1170 reviews
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Product Reviews
★★★★★ 5
Fits 2017 Honda Civic
This fit perfect for my 2017 Honda Civic. It looks and feels super similar to the ones I removed so they seem of equal quality. As for value? Can't beat it!
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Reviewed in the United States on August 29, 2025
★★★★★ 5
Perfect
Perfect
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Perfect fit for 2025 Honda CR-V Hybrid Sport
Size: 2023-26 CRV 2.0L Hybrid
This filter pack was a perfect fit when needing to replace the cabin and engine filter for my 2025 CR-V Hybrid. My Honda dealer wanted $140 ($70 ea.) to replace both filters while this pack only cost $30. The cabin filter was a piece of cake, but the engine filter took a bit of an effort. Nothing too crazy, though. Definitely worth the money.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Filters
Size: 2023-26 CRV 2.0L Hybrid
Perfect fit!
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Great product!
Size: 2023-26 CRV 2.0L Hybrid
Fit my 2024 Honda CRV perfectly. Quality seems to be as good as OEM. Dealer wanted $50 for each filter plus installation. Took me 15 minutes to do both watching videos.
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Reviewed in the United States on March 6, 2026
