
It will add a little photosynthesis to your tank during the night cycle, balancing the nightime ph drop. Prolly be not noticable with most moonlight LED's =( depends on the LED's.
People usually alternate their refugium lights with the day MH cycle to balance the PH swing, which is why it was suggested if he didnt tell you.
Ehemm...you're assuming quite a bit there buddy
She suggested it for purposes of his fish feeling less potential stress during the night as she understands that the added light from the blue moonlights helps the fish to see if any predators are lurking nearby..as the fish have no idea they are sleeping in your living room, bedroom..etc...![]()
