i use gesman bulbs in mt aquagiant 48 x2x54 t5ho fixture from there and its as good as my hagen glo t5ho which also has gesman i know they dont compare to the high end but they work good on my 75 gallon i only hav zoos and mush for coral i hav the aquagiant 10000k white bulbs in as well for 3 month with no issuses.
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