This is a wysiwyg selection of just over 18.30 pounds of black seiryu stone as seen in the first photo. Total of three (3) rock is included in this list. For use in iwagumi and amano style aquariums, biotope aquariums, terrariums, bonsai and traditional Japanese rocky gardens. The texture and infinite details in these stones allow you to easily create a natural aquascape. Seiryu can slightly increase the ph and hardness of the water if it is not treated (washed only), but all our deiryu stone has been treated and is tank ready.Substrate and trees not included. We ship using fed ex or ups only if possible, and carefully wrap all our wisiwygs in expanded-in-place foam or airbags as far as possible. This requires us to use larger shipping containers, and we use dual-strength shipping boxes wherever possible. When you buy ada tank supply, you get the best money can buy. Your purchase from ada tank supply is processed in a plant powered mainly by renewable solar energy. Help us bring to life the landscapes envisaged in our aquascaping products.