Silica Sand 4.4lb, for Terrariums, Vivarium's, Aquariums Fish Tanks Silica Sand in 4.4lb pack. Suitable for all types of aquariums including coldwater, tropical and marine. Increased surface area allows for improved anaerobic activity. Makes the perfect planting medium due to its finer size. Suitable for bottom feeders and barbed fish as the small smooth grains are fish and aquatic habitat friendly. Will not alter PH levels. ? 4.4lb quality Quartz sand ? Substrate Suitable for all types of Aquariums ? Perfect planting Medium ? Will not alter PH levels We sell many Aquatic Products, Check out our Store!! Terms and Conditions. We use all approved methods for accepting payments. Sales Tax will be added to all shipments based on regulations. We always try to combine purchases, please contact us directly for a personal service. You will be notified on the day that your goods have been dispatched via e-mail with tracking which is used on all purchases. Please note that if there are any problems, contact us first via e-mail giving full details of any problem along with your user ID. We use USPS and UPS as our chosen carriers shipments to Hawaii, Alaska Puerto Rico may incur surcharges, contact will be made to advise before shipment at which point the order can be canceled if desired. Orders placed on Saturday/Sunday Public Holidays will be processed next working day. We pride ourselves on excellent feedback, if any part of the buying experience is not to your satisfaction, please contact us to rectify before leaving feedback. By committing to buy you are agreeing to the Terms Conditions stated above.