Thanks and you are right about our Louisiana winter weather conditions. I'm not waiting on the SWCG, which by the way is a Goldline with a burnt varsistor, I am managing with MA and 6% bleach as needed, testing often with my Rainbow kit. One last question concerning the Rainbow kit which I would just as soon keep and replace the reagents but do I need to be concerned abut the test vials and the validity of the different color gradients? The colors look bright and crisp and while not stored in ideal temperature conditions the kit has been stored in a dark to very low light condition for the most part, but is that a concern? Speaking of the Goldline I have received a replacement varsistor and hope to get the replacement completed this weekend so I can get it up and running again. Great advice and thanks again!