Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? What do you use for dye?

Do you guys make your own dye or buy it somewhere, like maybe coop? Is there anyting special I need to do other than dump some in where I think I have a leak? I should probably find a better way to ask that. I know I have a leak. I think I know where it is but I'd like to make sure before I spread bentonite.

Any tips appreciated.