Vital: Don't switch on the heater when it’s not immersed in h2o—the heating aspect can malfunction and overheat, plus the glass tube can shatter if put in drinking water though warm. Think of circulation as creating a constant, well balanced existing, fostering a healthy environment that’s resistant to algae advancement. https://maps.google.bj/url?q=https://ageofaquariums.biz/maintenance/