Yeah^ but I think the point was that you cant get it from bigals in 500ml or 5L. Since the 500ml I got from then a couple months ago is running out, and the plants seemed to be doing good with it, I was going back to buy the 5L but its not there now. So I am trying Flourish for the first time. A 250ml would last my new tank about a week and a half so not much point of getting it...