Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 14 - Jun 19
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Description
Reef Code B - Balanced Calcium & Alkalinity System - Part B (Alk.) 2LOverview The carbonate 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 A. Benefits reef building organisms such as corals, clams, calcareous algae, etc.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 2356 reviews
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Product Reviews
★★★★★ 5
Filter Subaru
Style: Advanced Air Filter
Good product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 5
PERFECT FIX
Size: 32 mm, Color: Red
Perfect fit for DIY oil filter change on 2021 BMW X-7. Good quality, well made, should outlast the vehicle.
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Reviewed in the United States on March 19, 2026
★★★★★ 5
I like the red. It does the intended job perhaps like others do.
Size: 32 mm, Color: Red
It's a socket. It does the job without any fail to report. I like that it's red so that I find it easily in my tool chest the next time I need it.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Fits many makes
Size: 27 mm, Color: Green
Makes it easier to change oil. Fair price fast delivery.
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Reviewed in the United States on February 24, 2026
★★★★★ 4
3/8" Drive 36mm Oil Filter Socket
Size: 36 mm, Color: Red
Works, but seems slightly loose on the fit.
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Reviewed in the United States on February 14, 2026
