Any updates or more then and now photos? Personally, I'm not super impressed with the PAR readings you showed so far. For optimal growth of SPS you want between 400 and 500 PAR. My DIY LED array achieves that in the middle level of the tank (10 inches down my 20 inch deep 75 gallon) at less then full power with the array 6 inches above the water. If I turn it all the way up and lower to 3 to 4 inches above the water I get way more. I get well over 250 PAr at the sand bed 18 or 19 inches below the water surface.
Your clam may do alright but as I understand it clams need 250 to 300 PAR (I may be wrong on that but it's the number I recall).
Quote:
Originally Posted by TheDogFather
Below is the non scientific Vertex Illumina SR 1200-200 PAR measurement taken with a Apogee Quantum Meter. My tank is 18" tall and the fixture is 6" above the surface.
White 100% - Blue 100% - Royal Blue 100%
759 about 5mm below the surface
484 On left frag rack
392 At top right coral colony
242 Center of Red Monti
227 Center of Clam
185 Front Elegance Coral
214 Bottom right middel of tank
148 Bottom rear of tank
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