heater

Hi guys, I just recently purchased a 125W of the whisk Hager heater for my 40 gallon tank running with a 10 gallon sump. I thought a 125W heater should be enought because it is for 40~53gallon. And I set the temperature at 82°F for the first day and let it run for 24 hours, but my thermometer...

hi guys. I currently have a 350 gallon tank running with a 150 gallon sump tank filter. I need to bump up the temp to 31 degrees celsius since one of my rays is not eating well. I am using 2 pcs of 300 watt heaters on the tank. I notice that when i set the heater temp to 31 the tank's temp is...

My flowerhorn fish has developed some kind of boil on its one side of the gill I cannot understand what kind of disease it is. He eats well, does not have any problem like white crap. But since it has developed this boil, he is really getting aggressive for no reason. It also gaps for air not...