Chapter 793
Chapter 791 Electrician and Welder
When someone heard the knock on the door, the other people in the store subconsciously turned to look at the door.
Coincidentally, another person who knows.
Wu electrician stood in the door and looked at the probe. Another old man of similar age was riding an electric car on the sidewalk.
“Old Wu, isn’t it here?” The latter asked, and the voice was high.
As the outside was bright and dark, Wu electrician blinked his eyes and swept across the faces of the people. His eyes fell on Zhang Zi An’s body and he said with amazement: “Hey, is the boy you?”
“Master Wu, you are here, come in soon… is your friend outside?” Zhang Zi An greeted.
Wu electrician hesitated and nodded: “It is also a retired worker of our factory. His surname is Zhao, he is a welder.”
Then, he rushed to the outside man and waved. “Come in. Lock the car and don’t be stolen.”
Zhao Welder is a thin old man. His teeth are black and yellow because of years of smoking. He pushes the door with a strong smell of smoke. When he comes in, he swears: “Here? Lao Wu, are you kidding? This is not a Newly opened store? You haven’t picked up this thing yet! Going around, going to the old store, I can’t believe it in the new store, maybe it will close down in a few days!”
Said, he went to La Wu electrician.
Wu Electric also hesitated, but Zhang Zi An once helped him out in the fish market, and he was embarrassed to leave.
“Master Zhao is it? I completely agree with what you said – but my store has been in this street for more than ten years, but it is not a new store!” Zhang Zi An said.
“Not a new store?” Zhao welder smiled and pointed his finger at the wall and the floor. “This latex paint has just been completely cleaned. It’s not more than a month after re-decoration. You told me that it’s not a new store?”
“Hello eyes! This can be seen! This store is indeed new, but the store next to it is mine. I have been in this street for more than ten years. I don’t believe you can go around and ask.”
Zhang Zi An understands the idea that the other party wants to find an old store. Even if the omnipotent Taobao wants to find a store with a high sales volume, it is safe to do it.
Zhao welder walked out with suspicion and came back a moment later. He nodded and said, “That’s right, I said the wrong thing.”
The pet shop has never been seen by anyone. Zhang Zi An sent Lu Yiyun back to the store and asked, “Master Wu, are you looking at the 24V heating rod?”
Wu electrician nodded and looked at the aquarium creatures brought back to Zhang Zi An.
“Look at the heating rod and look at the fish by the way,” he said.
Zhao welder blamed it in disapproval: “Old Wu, I said that you don’t spend that money, the heating rod of twenty or thirty dollars is not the same? A few hundred dollars of heating rods can raise better fish. I don’t believe it!”
Wu electrician waved his hand helplessly. “Old Zhao, don’t persuade me about this matter. I made up my mind and then advised that it is useless. The problem is not fish, but safety. You are not an electrician. You don’t know how much electricity there is. Danger.”
It seems that before they came, Zhao welders had persuaded him more than once, but he was determined to buy a safer heating rod and refused Zhao welders.
“You talk about you… the older the more!” Zhao welder hated the iron and pointed him at him.
Wang Qian and Li Kun have a lot of opinions on this Zhao welder. You and Master Wu are not a family. Do people eat your family’s rice, or use your home’s electricity? Is it guilty to be so wide? Persuaded again, the other party does not listen to it, why bother to persuade to persuade.
Before contacting high-end aquarium equipment, Zhang Zi An did not feel how good the high-end equipment was, but after real contact, he understood that one penny was worth five cents, but two cents was more than one. The goods are much more high-end, and they are not convinced.
He brought Wu Xun to the 24 volt heating rod imported from Germany. “Master Wu, you can see it slowly, you can try it on the spot.”
Wu Dian was embarrassed to say: “I don’t want you to say, I really brought a multimeter…”
He took out the multimeter from his carry-on bag, and didn’t bring it when he went to the fish market last time. This time he has a heart.
“It doesn’t matter, you can try it casually. There is artificial seawater prepared. It should be similar to the conductivity of natural seawater.” Zhang Zi An pointed to a drain bucket placed in the corner. These artificial seawaters were directed by Wang Qian Li Kun. The deployment, just wait for today’s aquarium in place, after teaching once, they will do it themselves next time.
“Oh, artificial seawater.” Zhao welder said disdainfully: “A few steps away from the sea, what artificial sea water is still? It is purely more money.”
Zhang Zi An retorted in a quiet way: “It can’t be said that the natural waters near the shore are inevitably polluted, especially in the vicinity of the city. It is better to raise ordinary hand-picked fish. The top grade fish is best matched with artificial sea water. Otherwise, it is too painful to die.”
Wu Dianwen’s words are quite interesting. He used to save the natural seawater from the seaside in order to save money. However, he now feels that the hand-fishing fish can’t satisfy himself and is ready to raise some fine fish.
“How is artificial seawater?” he asked.
“The salinity of natural seawater is 34%-35%, prepare artificial sea salt and fresh water, and then buy the ordinary hydrometer, and mix it with the temperature-salt-density table attached to the hydrometer.” Zhang Zi An simply explains After a while, I lifted my finger at the corner of the wall and stressed: “But there are some things you need to pay attention to. When you make artificial seawater, don’t use metal containers. Iron, aluminum, copper can’t do anything.”
“Because seawater is corrosive to metals?” Wu Electric has some understanding.
“One is because of this, and the second is because a large amount of metal ions will enter the artificial seawater you have when the metal is corroded. The pollution of natural seawater may not be so heavy… You see that I use the cheapest plastic in the supermarket. Bucket,” Zhang Zi An said.
Wu electrician took a sigh of relief. “If you don’t want to say, I might have used the iron bucket of my home to match it. After all, I am strong…”
“Do you have artificial sea salt here? How much?” he asked with interest.
Zhang Zi An replied: “There are high-end and low-end ones. See which one you want.”
“Where is the difference between high-end and low-end?” Wu Electric asked.
Zhang Zi An brought two bags of sea salt for him to compare. “The main components of sea salt are sodium chloride, magnesium sulfate, potassium chloride, which account for 90%, and the remaining 10% are trace elements – high and low grades are worse. Here, the low-grade sea salt contains 20 various trace elements, and the high-grade can have a variety of 40. If you only raise fish, you can buy low-end ones, no need to waste money. But if you still raise corals and anemones, there is not enough Trace elements, their color will not be bright.”
Wang Qian, Li Kun and Jiang Feifei have heard of God and feel a lot of knowledge.
(End of this chapter)