Quote:
Originally Posted by sphelps
I'd say you've got more than enough light, whether the reflectors are crappy or not considering that the tank is 22” wide and 18” deep 16 bulbs is tones for what you have. And you run them for a pretty decent amount of time. In fact clams open up more when light levels are low and tend to not open as much when light levels are high. If you want your clams to open more try decreasing your light. Slowly cut back your lighting duty cycle first to see if that makes a difference or eliminate some bulbs all together. Either way, make sure you try cutting your lighting back before spending money on a new fixture which will do the opposite and possibly make things worse.
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Every tank and LFS I have seen the clams are wide open and impressive with high light levels. When my lights are ramping up and shutting down my clams don't open more so I don't think this is the case.