I have struggled with heaters on one my tanks, when it gets cold they can't keep up, I went through two visitherm stealths, and another heater, rated for 55 gallon tanks (my tank is 29 gallon), drove me crazy. Now I have made an adjustment that has really helped, I have placed the heater right under (or next to) the intake on my main filter. Since I have done that, the temperature is much more stable. I think water flow must be the key, I had been keeping the heaters on the opposite end of where my filter intake was. Just a thought that might help. Kypros On Mon, Dec 7, 2009 at 2:01 PM, Matt Staroscik <matt@wrongcrowd.com> wrote: > On Mon, Dec 7, 2009 at 1:56 PM, Shango Los <shango@shangolos.com> wrote: > > > Kind of random that they would fail at the same time though. Maybe one > has > > been carrying the other for some time. > > > > Neither alone is enough to heat the tank properly on a cold day, so if one > is dead, or both are ailing, I guess that would do it. > > It's also possible that one or both has a bad thermostat mechanism. Neither > control dial was never very accurate, perhaps one or both has gotten worse > in the past year. > > > > > > > On Dec 7, 2009, at 1:47 PM, Matt Staroscik wrote: > > > > > It's a 90 gal tank, and they need to keep the tank at most 15F above > > > ambient. (60F house, 75F tank max) > > > > > > I have used these heaters for years already, so it feels like there's > an > > > equipment problem. > > > > _______________________________________________ > > GSAS-Member mailing list > > GSAS-Member@thekrib.com > > http://lists.thekrib.com/mailman/listinfo/gsas-member > > > _______________________________________________ > GSAS-Member mailing list > GSAS-Member@thekrib.com > http://lists.thekrib.com/mailman/listinfo/gsas-member > _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member