AutoAqua Smart StirThe Smart Stir is a handy gadget to help with accurate water testing. Water testing is an important part of keeping a successful home aquarium. For accurate testing most liquid test kits require the test sample to be mixed or shaken after the addition of a reagent. In some cases adding one drop of reagent at a time, shaking or mixing in between waiting for a colour change to occur. This can prove time consuming and often leads to the reagents being