on second thaughts, maybe i wont. Yes, you can generally use water with algae to water plants, as algae can provide some nutrients and is a natural part of many plant ecosystems. However, it's best to avoid using it on seedlings and to avoid pouring it directly over the leaves of raw vegetables to minimize any potential risks associated with algae, such as toxins or the formation of a crusty layer on the soil surface.
don't think id like the risks involved