Most of those answers should be actually on the products. I'm not sure about the medication exactly, but the de-chlorinator is very easy, you just pour a certain amount of the de-chlorinator in a set amount of water. It varies from product to product, but the one i have is 5ml to every 10 litres of waterand I.Michelle, i'm not trying to cause an argument, and i realise you've been here a lot longer than i have, but just because it is making a bubble nest, it doesn't mean it is perfectly healthy, it is often the case, but not always