If you want to build a small ecological pool on the small balcony of an ordinary apartment, it is suggested to choose a sink with the outer edge of a wooden frame of 90×90×25 cm. Enclose the box with the corresponding waterproof cloth, and pour the tap water overnight into the bucket to check for leakage. Next, you put the hydroponic cups, flying saucers, foam stones and pebbles used to fix plants in the sink and rinse them clean. Then, put the flying saucer into the ecological pool and fasten it one by one with buckles. The best arrangement is alternating colors, which meets the aesthetic requirements.
The next step is not to grow vegetables at once, but to raise the water well. It is best to keep fish and shrimp, koi fish, goldfish, algae and shrimp in the pool. Koi fish should not be too big, but bright colors. A group of beautiful koi fish are enjoying themselves, which is very noticeable. Remember to ration fish and shrimp, and don't let the residual fish food affect the water quality. Fish manure will be decomposed by bacteria to provide nutrients for vegetables without adding other fertilizers.
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