>>2720597Salt definitely doesn't get stringy. Maybe you should give it a try. Depending on what you pay for round up it could even be cheaper. To fill your tank you'd need 200lbs of salt, which at the price I pay would be a little over $60 plus the cost of your surfactant. Initially I bought a bag from a company, but after I compared the ingredients and efficacy against store bought salt I just kept the bag for reference. Pic related.