FILTERING APPARATUS FOR WATER TANK, FILTERING METHOD, WATER CULTURE APPARATUS AND WATER CULTURE METHOD

摘要

PURPOSE: To provide a method for dispensing with the water-exchanging work of a fish-breeding water tank over a long period and performing the water culture of a plant without using agrochemicals. CONSTITUTION: A top-opened case 10 is placed above a water tank 1 and a flower pot 50 for water culture is placed on the case. The case 10 is divided into the 1st tank 11 to accept the water poured from the water tank 1, the 2nd tank 12, the 3rd tank 13 and the 4th tank 14 to raise the poured water from the bottom and filter the water and the 5th tank 15 to return the filtered water to the water tank. The water-filtering 2nd tank 12 to 4th tank 14 are divided with the 1st partition plate 21 to allow the inlet of water from the bottom and the 2nd partition plate 22 to discharge the water from the top. The plant P planted on the water-culture flower pot 50 placed in the upper part of the case 10 is grown by taking the organic materials existing in the water.