A lot of people want to know how much dye is required for their lake.  This really depends on 2 things – the size of the lake and the desired color.  An average ski lake that is 2200′ x 300′ x 6′ deep takes 3-4 gallons of SensiPro.  Most people are only using blue but by adding in 20-25% black you can produce a deeper, more natural look.  Send us your before and after pictures!