The CB Lemon Sour Acropora millepora is a vivid yellow-green SPS coral that can become a real centerpiece in a mature reef tank. It’s not the easiest coral, but with stable parameters and good planning, it will reward you with fast growth and intense color.

Placement, Flow, and Lighting

Start by giving this Acropora a stable, high-energy spot in your aquascape.

• Placement: Upper half of the tank, on a solid, immovable rock. Use a small dab of reef-safe epoxy or super glue gel to prevent tipping.
• Flow: Strong, random flow is key. Aim a wavemaker past the coral, not directly at it, to avoid tissue damage while keeping detritus off the branches.
• Lighting: Moderate–high PAR (250–350). Acclimate slowly: start lower on the rockwork or at reduced intensity and increase over 1–2 weeks to prevent bleaching.

Water Parameters, Feeding, and Color

CB Lemon Sour Millepora shows its best color in clean, stable water with just a touch of nutrients.

• Key parameters: Alkalinity 8–9 dKH, calcium 420–450 ppm, magnesium 1300–1400 ppm, temperature 77–79°F, salinity 1.025–1.026.
• Nutrients: Keep nitrate around 5–15 ppm and phosphate 0.03–0.08 ppm. Ultra-low nutrients can wash out the yellow tones.
• Feeding: While it relies mostly on light, occasional dosing of amino acids or fine coral foods (1–2x per week) can boost polyp extension and growth.

Tip: Log every change you make—lighting, dosing, or flow. When the coral colors up or declines, your notes will tell you why.

Inspect the base regularly for tissue recession or algae growth, and keep pests like Acropora-eating flatworms out by dipping all new frags. With patience and consistency, the CB Lemon Sour Acropora millepora will develop thick, branching growth and a bright, lemony glow that stands out in any SPS reef.