Zoo Med Dr.Turtle Slow-Release Calcium Block (Pack of 5) Description Dr. Turtle is a slow-release calcium block that conditions water while providing a calcium supplement to promote healthy shell growth for aquatic turtles. To use, simply place the Dr. Turtle Block in your turtles water supply. Features: Pack of 5 Dr.Turtle Slow-Release Calcium BlockTo use, simply place the Dr. Turtle Block in your turtles water supplyTurtles require UVB lighting and heat for proper shell growth and development Product Details: Product Dimensions: 7 x 4.3 x 0.7 inches ; 0.8 ouncesShipping Weight: 4.8 ouncesItem model number: MD-11 Payment We accept Paypal payments only. Sales tax may be applied to your purchase as we possess sales tax certificates for all states we collect sales tax in. If your state is one that we charge sales tax in, you will see the sales tax charge at time of checkout before you submit payment. Delivery Expedited shipping is free. Handling time on our orders is normally between 1-2 business days. Your order should reach you within 1-3 business days. We do not ship to AK, HI, PO boxes, or APO addresses. We're not responsible for any incorrect or undeliverable addresses. We only ship to the confirmed Paypal address. We don't accept requests to change shipping addresses post purchase. We do not ship to AK, HI, PO boxes, or APO addresses. We are not responsible for any incorrect or undeliverable addresses. We only ship to the confirmed Paypal address. Please note that manufactures update their packaging from time to time and that the packaging images shown in our product may vary from what you ultimately receive however be assured you are receiving the identical contents you ordered. Return Policy You may return new, unopened items within 30 days of delivery for a refund, and a restocking fee may apply. Return shipping fees are not refundable. Message us for return instructions if you have questions. Support & Feedback We take our reputation seriously, we buy and sell online, so we understand the value of trust. If you are unsatisfied with your order, please contact us and we will work with you to resolve it to your satisfaction. Contact us via eCRATER messaging and we will respond within 1 business day. Our office hours are 8AM-4PM PST Monday-Friday. We thank you for your business!