Fluval Reef 4.0 LED

Full-spectrum reef bar light with seven LED colour bands and actinic output, app control through FluvalConnect and an IP67 rating. Each size fits a stated range of tank lengths. Fluval's table gives PAR at 12 in and 18 in of 75 and 40 for the 22W, 100 and 55 for the 32W, 110 and 65 for the 46W, and 120 and 70 for the 59W. At those depths that's weaker than AI Prime 16HD's stated 100 PAR at 24 in, so it's listed here as low light.
- Light level
- Low