Pettex Roman Aquarium Fish Tank Gravel Substrate 4.4lb Pouches Aquatic Mixed Gems 4.4lb Pouch. Gravel is made of non-toxic material, safe to your fish and will not affect PH of the water. Natural unpolished river gravel. Colorful gravel pebbles can be used as decoration for fish tanks, Aquariums, Vivariums, plants, vases or other places. Natural materials sourced to mirror aquatic environments found throughout the globe. This fish tank gravel not only enriches the natural splendor of your salt or fresh water fish, but also encourages a healthy aquatic ecosystem. Gravel helps hold plants and ornaments in place. Helps beneficial bacteria colonize. Great for adding character, color and a personal touch to your project. ?Natural looking Gravel ?Suitable For All Types of Aquarium Set Ups ?Perfect Planting Medium ?Will Not Change The PH Of The Water We sell many aquatic products online, check out our store! Terms and Conditions. We use PayPal for taking payment, if you wish to purchase via other methods please email us for customer service. Sales Tax will be added to all shipments to New Jersey. 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.