ITC Aquatics PARwise par MeterPARwise par Meter is ITC Reefcultures latest tool which ends the questions of what setting should my lights be on, whether that be brightness, colour (spectrum) or photoperiod. PARwise empowers you to make the right decisions over your lighting settings and to share and discuss lighting in great depth with the reefing community, with accuracy whether your organism is aquatic or not. Perfect growth rates need three things: The correct wavelengths, the