Browse the API® Simple Care Guide created by our fish keeping experts. The Simple Care Guide aims to improve the aquatics experience for all fish keepers, guiding you through keeping and enjoying your aquarium or pond for a lifetime. Keeping an aquarium or pond is relaxing and fascinating, and API brand is here to support you in your fish keeping journey! Whether you’re a seasoned fish keeper or a first-timer, you will love using our products to help you start or maintain your ideal aquarium or pond. AQUASPIN Advise allows you to track what is happening inside your aquarium or pond to ensure the health of your fish and other aquatic life. It uses your water testing results to give specific recommendations customized to your aquarium or pond. Test at home or at your local AQUASPIN retailer.