Finally an affordable LED system

[StirCrazy]

Originally Posted by Aqua-Digital

Hi

You maybe reading the PAR readings wrong, the distance refers to the fixture height above the water line

actualy it isn't acording to this quote from Pacific sun in the thread you linked to

"This distance is measured between the lamp and PAR sensor.

Soon to put the results of PAR for Metis XM (various models) - a distance of 12 and 24 inches

Regards

Przemek"

so at 24" from the unit to the sensor you will have 109 PAR. so if you have the fixture 6" (your minimum recopmended hight ) above the water on a 24" deep tank on the bottom of the tank you will have less than 100 PAR.

Steve