Sea Lettuce Macroalgae (Golf Ball Size)

Product details

Sea Lettuce Macroalgae (Golf Ball Size) is a bright green, leafy marine macroalgae typically sold under the name Ulva sp. It’s a popular addition to marine refugiums, sumps, and macroalgae displays because its soft, flowing blades create an attractive “lettuce-like” look while also helping support natural nutrient cycling. In practice, sea lettuce can be used as an active grow-out macroalgae: as it grows, it takes up dissolved nutrients, and routine harvesting helps remove excess biomass from your system.

Features:

• Leafy, translucent blade growth makes it visually appealing in refugiums and sump displays.
• Fast-growing macroalgae can assist with natural nutrient export when you harvest regularly.
• Thin blades provide habitat and grazing space for beneficial microfauna such as copepods and amphipods.
• Often appreciated as a supplemental grazing option for herbivorous livestock (e.g., tangs, rabbitfish, snails, sea urchins, and other algae-eaters).
• Can be grown free-floating, attached to rock/rubble, or gently tumbled in a properly sized refugium.
• Best results typically come from established marine systems with available nutrients and appropriate refugium lighting.

Specifications:

• Product type: Macroalgae (Sea lettuce)
• Scientific name (as sold): Ulva sp.
• Provided size/portion: Golf ball size
• Lighting guidance: Moderate to high
• Water flow guidance: Moderate flow
• Placement guidance: Open refugium, sump chamber, or planted marine display where it won’t clog pumps or overflow screens
• Nutrient requirement (general): Requires available nitrate, phosphate, and trace elements; growth may slow in ultra-low-nutrient systems
• Maintenance: Harvest small portions regularly rather than allowing one dense mass to fill the chamber