Red Sea Salt 175 Gallon Large Bucket (48.5lb)

In-store pickup only.

Red Sea Salt is a research-grade marine salt blend with biologically balanced, elevated levels of the foundation elements (calcium, magnesium, carbonates) needed for sustainable, accelerated coral growth. The 48.5 lb (175-gallon) large bucket is the sealed, humidity-resistant format — ideal for long-term storage and frequent water changes on medium to large reef systems.

Looking for more reef supplies? Browse our Equipment Collection.

• Research-grade marine salt for reef and fish-only tanks
• Elevated foundation elements: calcium, magnesium, carbonates
• Balanced ratios for sustained coral growth
• Dissolves quickly with minimal residue
• 48.5 lb sealed bucket — mixes approximately 175 gallons of seawater
• Humidity-resistant container for long-term storage

Box vs bucket — which should I pick?
The bucket is sealed against humidity and easier to store between water changes. The box is less expensive per gallon. Pick based on how quickly you'll use it.

Red Sea Salt vs Coral Pro?
Standard Red Sea Salt has balanced reef-ready parameters. Coral Pro has higher calcium, magnesium, and carbonate for SPS-heavy tanks with faster coral growth.

Can I pick this up in-store?
Yes — this item is in-store pickup only. We don't ship salt mix.