My son has a par38 bulb over his 10gallon and it is really powerful. Mine is controllable via remote and it is at 60%. I may raise it up higher because it is a bit spotlighting. But I like it just need to raise it.
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looks real good but I can see the spot light...
plus if you raise it your going to have even more light spillage...
koa(mike) modded his wavepoint to add onto the hood that is provided to help with spillage.... See if he chimes in.