LMFAO@dunecat! Not that Im an expert @ making compost teas, but there is something called concentration gradient, meaning whatever you put in that water (i.e. guano etc.) will eventually equalize between itself and the water, making it the all the same strength. I guess that may only take a few days a week or whatever, but if you wanted it super strong, just add more guano, check it with a tds meter or EC and when it stops climbing UP, its as potent as it is going to get, until you either add more fresh water, or more fertilizer. Hope this helps!