Seachem Reef Trace Elements 500ml Description Reef Trace™ supplies a broad range of trace elements demonstrated to be necessary for proper reef health and growth. Trace elements are normally depleted by utilization, oxidation and precipitation. The latter two processes occur more rapidly than with other micronutrients. This makes it important to restore trace elements on a regular basis. Reef Trace™ may be used alone or in conjunction with Reef Plus™. Best results are obtained when both are used. Reef Trace™ is nitrate/phosphate free.Replenishment of a number of trace elements is required to maintain an environment ideal for the growth and reproduction of marine life, but while the importance of trace elements has been recognized by aquarists for many years, the physiological reasons are not fully understood. The chemical elements in seawater are varied, and, likewise their addition to the aquarium in trace quantities has varied effects on a variety of saltwater plant and invertebrate species. In general, though, these elements are important for metabolic processes and pigment formation. Addition of iron, for instance, has been shown to benefit coloring and growth for corals, anenomes, and other photosynthetic animals. Features: Conentrated Vitamins And Amino AcidsSaltwater SpecificNitrate ans phosphate free Product Details: Product Dimensions: 7.6 x 2.1 x 1.6 inches ; 1.2 poundsShipping Weight: 1.2 poundsDomestic Shipping: Item can be shipped within U.S.International Shipping: This item is not eligible for international shipping. Learn MoreItem model number: 67107330#210 in Aquarium Water Treatments 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!