Allan writes, The purpose of the filter course is to prevent fine soil medium particles from washing into the drainage layer causing clogging or reduction of the drainage capacity of the drainage layer.
Just how much caffeine is too much? For the average person, up to 300 mg of coffee a day, or two to four cups of the average brewed coffee, is a moderate amount that isn't harmful. But once you hit more than four cups, you may experience less-than-desirable side effects.
Coffee is safe for most adults. Drinking more than 6 cups/day might cause âcaffeinismâ with symptoms such as anxiety or agitation. People who drink a lot of coffee every day may need to drink more coffee to get the same effects.