pantherguy30 Posted August 20, 2009 Share Posted August 20, 2009 For the life of me I couldn't figure out why my corals kept bleaching out and dieing! My water parameters were always in the correct zones. I even built a new hood to locate my 250 de buld 12" off the water. Still kept killing frags! I visited a lfs with a water sample to see if it was an error in my test kits. Everything was fine except they he stated the water seemed warm to him. It was a hot day so I payed little attention to it.But when I got home I decied to play with my heater dial. It wouldnt come on untill 86 plus degrees. I had been useing a little zoo med digital thermometer. I went out and purchased a glass float thermometer and sure enough my water temp was around 85. but my digital thermometer was reading 78! After all this time I had been allowing my tank to run at extreme high temps and never could figure it out. So during our hot streak my tank got well into the 90's. I have no clue how some things were able to survive but I have lost a huge collection of frags i've gathered over the past year. I have added a couple fans to the sump and hood and that has kept my temp issue under controll. So the good news is that I am in the market for lots of new frags. The bad news is I'm a dumb%@# for not catching this a long time ago!! (scratch) Quote Link to comment Share on other sites More sharing options...
vanz Posted August 20, 2009 Share Posted August 20, 2009 [language filter] sorry to hear about that, but thanks for the heads up. I also use a digital thermometer, I should throw in a glass one to double check if it's accurate. Quote Link to comment Share on other sites More sharing options...
Saltfinsax Posted August 20, 2009 Share Posted August 20, 2009 Don't feel bad, this hot weather had made me double check mine and found it was reading about 4 deg higher then normal. I guess it was a good thing its reading high and not low. So that means I have been trying to keep my tank below 75 all the time. Quote Link to comment Share on other sites More sharing options...
Rick Posted August 20, 2009 Share Posted August 20, 2009 Both of my digital thermometers read within a degree or so but I still keep a glass thermometer in the sump so I can keep an eye on it. Cheap insurance since the glass thermometers are only a few dollars. Quote Link to comment Share on other sites More sharing options...
pledosophy Posted August 20, 2009 Share Posted August 20, 2009 I had two drop in digital thermometers on the same tank in the same spot that read 6 (it might have been 8 it's been awhile) degrees apart from each other. Neither lined up with the old school $3 drop in. JME Quote Link to comment Share on other sites More sharing options...
RoseCityAquarium Posted August 20, 2009 Share Posted August 20, 2009 The glass drop in thermometers can be off as much as the digital thermometers sometimes. Quote Link to comment Share on other sites More sharing options...
pantherguy30 Posted August 20, 2009 Author Share Posted August 20, 2009 I was still in disbelief after throwing in the glass thermometer that I went into my homebrewing stash. Grabed a huge glass thermometer and threw that into the tank and it had the exact same readout as the little 1 did. So I had 2 thermometers and my dial on the titanium heater all telling me that my water was around 85 degrees. I would like to know if anyone could recomend a good digital thermometer that gives more acurate readouts. Quote Link to comment Share on other sites More sharing options...
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