Hydrotek Flood Tables are made with the finest virgin ABS plastics, sparing no expense to bring you the highest quality and level of durability available with today's technology. Other manufactures use a much lower quality styrene plastic that does not hold up to consumer expectations. Their ABS plastics are extremely durable and hold up to shipping and use in cold weather. Their flood tables are grooved with proper irrigation channels to help keep your plants at their healthiest. The table's black color helps prevent the growth and spread of algae. They offer the highest of quality plastics to you in a variety of sizes to fit your needs and at a low enough price to fit your pocket book.