Welder Zhao was closer to Electrician Wu. The next day, he told Electrician Wu about his encounter with Carpenter Wang the day before, and he was immediately scolded by Electrician Wu.
Electrician Wu scolded him for being ungrateful. How could he believe what others said? How do you know if Carpenter Wang recommended that aquarium because he took a commission from that aquarium? Maybe every time he recommended someone to the shop, he would get a commission?
After being scolded by Electrician Wu, Welder Zhao hesitated again. He felt that both sides seemed to be reasonable, so he decided to visit both sides. Since there was a promotion for the opening ceremony of the Amazing Fate Aquarium, Zian had followed Electrician Wu here first. He would go to the other aquarium tomorrow or the day after.
Welder Zhao was the main speaker, and Electrician Wu supplemented from the side, revealing Welder Zhao's shortcomings. Finally, Zhang Zian understood what they were arguing about.
Electrician Wu took a breath and said, "Little Zhang, this is a stubborn donkey. I can't convince him … Tell me, is what Carpenter Wang said true?"
Welder Zhao wanted to refute, but he didn't say anything in the end because he also wanted to know whether Carpenter Wang was telling the truth or not.
Zhang Zian considered his words and said, "Actually, what he said makes sense …"
Welder Zhao opened his mouth to mock Electrician Wu, but Zhang Zian continued, "But what he said was not the truth."
"What do you mean?" Electrician Wu asked.
Zhang Zian explained in detail that there were generally three ways to open a saltwater fish tank. The first was to open the tank with a live rock, which was what Welder Zhao had done in the past. The second was to open the tank with a dead rock. The live rock was boiled with boiling water and even sterilized with drugs to kill all the organisms and microorganisms attached to the live rock. Then, it was put into the fish tank to raise the fish. The third was to open the tank with an artificial rock. It was similar to opening the tank with a dead rock, but the disinfection step was omitted.
What was interesting was that in China, almost everyone used live stones to open the jars, while in other countries, dead stones were the absolute mainstream. A small number of people used artificial stones to open the jars, and very few people used live stones to open the jars. Moreover, some countries even had laws prohibiting the use of live stones to open the jars … It formed a strong contrast between China and other countries.
Zhang Zian followed Karl from Germany to learn how to run an aquarium. Of course, he also learned the theory and techniques of using a dead stone to start a tank. Even so, he still had some understanding of the strengths and weaknesses of these three schools.
Words were useless, so he asked Li Kun to bring over a live stone that had not been used yet.
The live stones in his shop were bought wholesale from the fish market. Most of them had been processed and turned into dead stones, but a few of them were still in the state of live stones.
Li Kun brought over a plastic basin that was half filled with seawater. A natural live stone was soaked in it. The surface of the live stone was slightly brown, and it was full of wrinkles and pores.
"This live stone should be similar to the reef in your house." Zhang Zian rolled up his sleeves, took out the live stone from the water, and showed it to the two elders.
They nodded.
Then, Zhang Zian did something unexpected. He put the wet live stone on the ground with a cotton cloth, took out a hammer from the toolbox, and smashed it hard on the live stone!
With a crack, the living rock split into four or five pieces from the middle, and the seawater contained in its cavity flowed all over the ground.
"This … What are all these things?" Electrician Wu exclaimed.
After the live stone split open, some strange small creatures flowed out with the seawater.
Insects covered with bristles, wriggling tube worms, tiny translucent sea anemones, small crabs crawling everywhere, brightly colored shrimp, and some creatures that could not be identified at all … They never would have thought that this small live stone would hide so many things.
Zhang Zian pointed at the creatures with the hammer handle and introduced them to them one by one. "You've seen this before. It's a bristle caterpillar that is similar to a clam worm. Bristle caterpillars are actually useful. They can help you turn the sand and clean the gaps in the live stone. Tube worms and sponges are also useful. They can filter water. Hairy crabs and mantis shrimp have both advantages and disadvantages. As for these ghost-handed sea anemones, they are notorious scourges in the fish tank … Putting the live stone into the tank means bringing all of these creatures into your tank. It sounds like there are advantages and disadvantages, but the benefits provided by the live stone can be replaced by other things, while the disadvantages are very troublesome."
He did not clearly state the advantages and disadvantages of using a dead stone to open a tank or a live stone to open a tank, because existence was reasonable. Since the live stone could be so popular in China, it was not completely useless.
Electrician Wu asked curiously, "Why is the dead stone popular overseas, but the live stone popular in China? What's the reason? Is it just because of different concepts? "
"Not exactly." Zhang Zian shook his head. "The live stone is popular in China because the performance of the protein separator was generally not good enough in the past. The egg alone could not completely remove the pollution in the tank, so the live stone could only be used to speed up the water-nourishing process … Over time, this method became the mainstream in China. Even now, when the performance of the mid-to-high-end egg is more than enough, many people still regard it as a standard."
Electrician Wu immediately said to Welder Zhao, "See, didn't I tell you? You had to listen to Carpenter Wang. Do you think he really understands? He's just following the crowd. He knows how it is, but he doesn't know why! "
Their conversation attracted the other customers in the shop. They frowned at the lively creatures in the live stone. Things like bristle caterpillars were really unbearable to look at.
After listening to Zhang Zian's explanation, everyone felt that it was a new experience.
Welder Zhao was not convinced. He said loudly, "If the live stone is turned into a dead stone, what about the beneficial bacteria attached to it?"
Zhang Zian had expected him to ask that question. He led them to the nearest aquarium tank with a bottom cabinet, squatted down, and opened the bottom cabinet to let them see inside.
"Eh? Why is there a small tank hidden in the bottom cabinet? "Welder Zhao was surprised.
As everyone could see, there was a small fish tank in the bottom cabinet. There was nothing else in the fish tank, only a live stone soaked in seawater. Several pipes connected the small fish tank to the filtration system in the bottom cabinet. This was Zhang Zian's custom-made aquarium tank.
Zhang Zian further explained, "In the large tank above the bottom cabinet, there is a dead stone, but in order to replenish the beneficial bacteria, a small tank was added to the filtration system. There is a filter in the pipe that connects the small tank, so the bacteria can pass through. However, the small creatures hidden in the live stone can't pass through, so they are blocked by the filter. It's like combining the advantages of the dead stone and the live stone tank into one, to avoid the disadvantages. "
"Boss, what brand is this aquarium tank? I want to buy one, too. "Someone was tempted.
Zhang Zian had been waiting for this question, so he immediately replied, "This was designed and customized by our shop. You can't buy it outside. If you are interested, our shop can customize it for you!"
The majority of the profit from opening an aquarium did not come from the aquatic creatures, but from the peripheral products.
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