Surfactant Tank ratio for proportioner

It depends on the concentration of your surfactant. I was advised to mix it till it’s a little thick, then you can just adjust up or down on the dial. I just ordered slo Mo to put into my 25 gal surfactant tank and not sure how much to put in yet. Might be 1 to 5 ratio for that since it’s so thick. May just dump the 5 gallon pail into the tank and fill with water (which would be 1 to 4) and probably just turn the soap dial to 1 normally. I too am curious as to how much other people put in of slo mo specifically…