How big of a pot? Usually takes me about 20mins for a 5 gal pot that is in flower.I do water pretty slow, It takes about 10ish minutes per pot. Water to about 5% runoff. I do it about 1/4 gallon at a time, wait a few minutes, if I see no run off I do another 1/4 gallon and repeat that process till the saucers have enough water to just barely cover the bottom. Usually a little less. But 6.8 is really an ok ph? I guess it is buffered since its peat.