Y'all need to get a lux meter. Stop guessing.
Put the meter on top of the tank an meter. Raise the light and turn up the dimmer to match the old reading. Also you can slowly increase light for acclimation.
And if you take the lux reading and devide by 60 you'll get a pretty close approximation of your par.
Put the meter on top of the tank an meter. Raise the light and turn up the dimmer to match the old reading. Also you can slowly increase light for acclimation.
And if you take the lux reading and devide by 60 you'll get a pretty close approximation of your par.