I currently have plans to build a 3 or 4 plant 15gal RDWC using a clear tote for easy water level/root viewing.....Has anybody ever heard of adding fish (goldfish or other common fish that doesn't need warm water) to the container? It would be in my "Bloom Room" exclusively, so the nutes would be on the heavy side.....Would it be a mutually beneficial thing, or would it just kill the fish quickly?