splendidbetta Posted October 26, 2009 Report Share Posted October 26, 2009 Is it safe? There's no water running around inside, it's just beads of water on the inside glass. The heaters have not experienced any trauma during their use. I have one running now in my full 90L tank heated to 30C, and I only just noticed it. They are Aqua One or similar heaters. Thanks :D Link to comment Share on other sites More sharing options...
fishbites Posted October 26, 2009 Report Share Posted October 26, 2009 I run all Aqua One heaters but never seen condensation in them before - could have had some moisture during assembly perhaps and the heater elements boiled it off and the tank water condensed it again on the glass.... if it had a leak or crack you'd expect a lot more moisture wouldn't you.... I actually had an Aqua One heater left on after I drained a tank - all it did was melt the heater holder and it still works (let it cool off before I put it back in water and tested it and no cracks or leaks in it). Link to comment Share on other sites More sharing options...
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