I got a few lab grades off ebay and they are the SH** very accurate. obviously. As for a full time one I attached mine to a rubber band and string when I want to check up on my coral life ones.zennzzo;2840678; said:just get the most accurate type there is...a lab thermometer...
http://cgi.ebay.com/NEW-SCIENTIFIC-...1QQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247