11-03-2014, 08:38 PM
Ive never used a challenger but im doing 6000 square ft of cgd at my church tomorrow, 175 with a solution tank should take about 6 hours , I do have helper that will be pre vacuuming in front of me and having chemical ready when i need it, will anyone at your church lend you a hand maybe spraying down chemical in front of you should make life easier.