So far so good, I took my second temp sensor and put it in my make up water trash can. Now I can get good reliable temps from both tank and new water before water changes. I think im going to place a order for a third temp sensor, unless some one has one that they want to sell. Allso I done a temp test with a coral life temp gauge a there was only a 2/10ths of a degree differance between the two. Not bad.