1 In Data Tools, click Data Validation, and then click Data Validation. 2  In the Input message tab, check Show input message when cell is selected. 3  In Title, enter a title for the pop-up window. 4  In Input Message, enter the text you want to appear in the pop-up window.
Melamine resin contains melamine in a manner similar to table salt containing chlorine. While melamine is dangerous to ingest, melamine resin is not. Melamine is the chemical that has been contaminating pet-food lately. Melamine resin is the thermoplastic from which plastic-ware, counter-tops, etc are made.
Chloramine is a combination of chlorine and ammonia. It is a stronger disinfectant than chlorine alone and is used in areas where this extra disinfectant is needed. As with chlorine, you must eliminate this chemical from your tap water before adding it to your aquarium or it too will kill your tropical fish.