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Unfortunately I don't know any sufficient lights for corals that would work seamlessly with the FluvalSmart flex canopy. You may need to remove your cover. We had to remove our top and purchased a mid-grade option. That being said I highly recommend this light as an affordable option. You can get the NICREW controller as well. They work great together. It lacks the bells and whistles of the more expensive brands, but it allows ramping and a customizable schedule.
Amazon product ASIN B08CK4NMSF
Amazon product ASIN B09QPPJYXL