Grape Caulerpa Algae

Caulerpa Racemosa also known as green grape algae is an excellent way to lower nitrates and phosphates in the aquarium. By placing in the tank, sump or refugium, the macroalgae absorbs phosphates and nitrates from the water. Caulerpa racemosa is unique in that it has perfectly round individual clusters, resembling grapes on a vine.

This is a warm water algae species we aquaculture that won’t shock from typical saltwater aquarium temperatures of 76 – 84 degrees. Found in sub-tropical Florida, as well as throughout the Caribbean. Quite popular with aquarist’s, many grow it in their refugium, sump or in the aquarium itself. Although illegal in the state of California, Caulerpa racemosa grows well, and needs pruning every few weeks. 

Difficulty to Grow:Easy

Reef Safe:Yes

Lighting Requirements:Provide 75 to 100 watts of 5100K to 6700K floodlight lighting or equivalent fluorescent lighting to thrive.

Water Parameters:76-84° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.026

Supplements: Magnesium, Trace Elements, Iron

 Then place the algae in your tank, sump, or refugium. Trim back your algae periodically to directly remove the absorbed toxins from your water. You may also keep it as food for your herbivore fish.