Vibrant dosing observation | REEF2REEF Saltwater and Reef . 08/02/2018 · I don't think we have a good understanding of what Vibrant actually does, but bacteria need phosphate and it is possible to drive it too low for some species to thrive Bubble algae (valonia) seems to do fairly well at low phosphate levels (low enough to stress corals), so low phosphate isn't generally the best option for it
