Today I mixed a stock solution (for 1 litre) made of this. 145g Dektol powder, 50g Sodium Sulfate anhydrous, and 30g Ammonium Thiocyanate. Mixed as a working solution 1:1 may be a bit strong for some. Although it produced an OK image, it was really fast acting. Tomorrow I'll try 1 part stock to 2 parts water,