I am potting up some Water Hawthorn bulbs and my pond with the good funky biological nutrients is full so I am putting some in tubs until I can deliver them. I have some low salt water soluble urea 46-0-0 but I'm not sure how much to put in the tubs they are 25 gal tubs. If anyone knows what the Ph should be that would be great too right now its at 7.9 and I can adjust it with citric acid if I knew where it should be. I got these from a friend kinda a last minute thing and I need to get them going today they have been in a bucket for over a week and are sprouting. Thanks in advance for any help ASAP.