All the water parameters you asked about tested at zero. I have had the kit since 2009 ~ I have no idea if it is in it's periodicity. I will check on that ASAP. I replace about 2 gallons of water with each water change plus adding 1/2 to 1 gallon to replace evaporated water. I will move the frog as you suggested and try the epson salt. Thank you for your advice and knowledge!