tomtoothdoc

GOLFER WANNABE
Location
north jersey
Rating - 100%
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Where I have it i have about 230 par? Is that enough??

a quote from a study about tridacna and coloration

http://www.advancedaquarist.com/2008/1/aafeature3

This experiment was conducted while using an Iwasaki 400-watt 'daylight' metal halide as the illumination source. No photosaturation (much less dynamic photoinhibition) was noted at PAR values approaching 600 ?mol?m??sec, or ~30,000 lux. This does not mean the clam requires this amount of light; merely that it can tolerate it. T. maxima specimens can do just fine when maintained under much less light (200-300 ?mol?m??sec, or 10,000-15,000 lux, is generally sufficient).

another good read on light requirement

http://www.advancedaquarist.com/2007/3/aafeature1

btw we probably need to remap your par chart....after mounting the sensor to the holder you made, i'm getting much higher reading than when we hand held it (high 200's to high 300's became high 300's to high 500's). i think we were blocking the sensor with our hand/arm.
i'm getting low 200's on the sandbed in the refugium at 18" depth and the ai hung 12" above water with setting of 50w 100b 100rb.
 
Last edited:

thirty5

A Little Annoyed!
Rating - 96.6%
84   3   0
a quote from a study about tridacna and coloration

http://www.advancedaquarist.com/2008/1/aafeature3

This experiment was conducted while using an Iwasaki 400-watt 'daylight' metal halide as the illumination source. No photosaturation (much less dynamic photoinhibition) was noted at PAR values approaching 600 ?mol?m??sec, or ~30,000 lux. This does not mean the clam requires this amount of light; merely that it can tolerate it. T. maxima specimens can do just fine when maintained under much less light (200-300 ?mol?m??sec, or 10,000-15,000 lux, is generally sufficient).

another good read on light requirement

http://www.advancedaquarist.com/2007/3/aafeature1

btw we probably need to remap your par chart....after mounting the sensor to the holder you made, i'm getting much higher reading than when we hand held it (high 200's to high 300's became high 300's to high 500's). i think we were blocking the sensor with our hand/arm.
i'm getting low 200's on the sandbed in the refugium at 18" depth and the ai hung 12" above water with setting of 50w 100b 100rb.

Wow!!! Ok lemme know when you are available......

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