24" depth, who runs t5, who runs MH?

[Doug]

Originally Posted by Canadian

T5 is only adequate for tanks 12" or less in depth. Anything greater than that depth and growth rate for SPS will be less than 1mm per month when using T5s.

Additionally, PAR values measured by meters such as the Apogee Quantum meter measure false high PAR values for actinic fluorescent lamps so the measured T5 PAR values are misreported (over inflated).

So your saying all those in the thread I linked are wrong??

[midgetwaiter]

Originally Posted by Canadian

T5 is only adequate for tanks 12" or less in depth. Anything greater than that depth and growth rate for SPS will be less than 1mm per month when using T5s.

Trying to make a blanket recommendation for the light requirements of all SPS corals is pretty silly. Would a milli and a pavona really react the same to a given light level?

Originally Posted by Canadian

Additionally, PAR values measured by meters such as the Apogee Quantum meter measure false high PAR values for actinic fluorescent lamps so the measured T5 PAR values are misreported (over inflated).

T5 lamps have heavy blue output for a reason, some or maybe most the photopigments in corals respond to light in these wavelengths. Using a PAR meter designed for horticulture may not be the best tool to measure this but it's the best tool we have. However referring to this artifact of PAR measurements as "misreported" completely overlooks the basic requirements of these animals.