Yannick Desvignes Paris, France "I’ve been using the AI Hydra series of lights in my previous 3ft & in my current 5ft tank. Good growth since I started the tank 7 months back. Love the ease of customizing light settings & how the colors pop under the blues of the HD lights." Tank Type Custom Tank Size 850L (225G) Lighting 6 Hydra TwentySix HD Download Settings