Chapter 754: Absolutely Misunderstanding

From the words "Pomegranate tree in the canopy fish tank, Mr. fat dog and fat girl", you can hear how much old Beijingers like to raise fish and dogs. The rich and leisurely courtyard life makes both dogs and girls fat.

At the end of summer and the beginning of autumn, the number of mosquitoes gradually decreased, and the melodious sound of reading from the teacher came from the study.

Move out a deck chair, sit under the canopy full of purple grapes, peel a bright red pomegranate, and the ripe pomegranate seeds burst out sweet juice between the lips and teeth.

The fat old dog lay lazily beside the deck chair, licking its tongue from time to time.

The outer wall of the fish tank condensed fine water droplets due to the abundant water vapor, slowly gathered under the action of gravity, and then flowed down the tank wall, wetting a piece of bluestone.

Goldfish with a pair of bubbly eyes are spitting bubbles and playing among the dark green lotus leaves.

The white and fat Xintou happily ran and had fun in the courtyard.

From then on, a good life has been closely linked with pets.

Homeowners keep cats.

Lively and outgoing people own dogs.

People who want to cultivate their sentiments and self-cultivation can raise fish.

Of course, the life in a courtyard house in Beijing is not something that ordinary people can enjoy, and there is no one that cannot afford to spend 100 million yuan.

In my old life, fish farming was basically done extensively, and I didn’t pay too much attention to things. Moreover, cold-water fish such as goldfish, grass goldfish, and koi are very cold-resistant, so I don’t need to go through a lot of trouble to move the fish tank into the house even in winter. .

Besides, the fish tanks in the old Beijing courtyards are not only used for fish farming, but also for fire fighting. Once a house catches fire, the nearest dog can put out the fire from the fish tank.

Now the greenhouse effect is serious, and it can’t be raining smoothly throughout the winter, but Beijing was quite cold in the past winter, and after winter, the water surface of the fish tank formed a thick layer of ice.

When spring starts and the ice melts, you will be surprised to find that the goldfish in the fish tank are swimming again, as if they are not affected by the freezing of the fish tank at all.

With the development of the times and technology, extensive fish farming can no longer meet people's needs, because people want to raise fish other than goldfish, grass gold and koi, and raise some fish that are more delicate, delicate, rare, and more colorful At this time, it is the turn of all kinds of aquarium equipment to play.

People who are a little more serious about fish farming will go to the fish market or buy some simple equipment online, such as heating rods, water pumps, filters and filter materials, and then buy some pellet feed. In this way, you can basically deal with at least half of the freshwater fish.

Those who are more serious and know how to check information on the Internet will add some nitrifying bacteria, fish medicine, oxygen pump, and change the water in the fish tank regularly, so that at least 80% of the freshwater fish can be fed.

But marine life is much more complicated than this. Wang Qian and Li Kun stared at the dazzling array of equipment.

It is impossible for Zhang Zian alone to take care of the entire aquarium. Usually, Wang Gan and Li Kun must be in charge of daily affairs, so he pointed to these equipment and explained the use to them one by one.

"We know this thing, is it a filter?" They said while fiddling with one of the equipment.

"Well, but do you know what kind of filter that is?" Zhang Zian asked back.

They showed embarrassment, "Isn't this filter just a filter? Put some grinding wheel filter cotton or something in it, and the fish feces can be filtered out."

Zhang Zian smiled and said: "The filter is not that simple. The most important thing in the fish farming equipment is the filtration system. The quality of the filtration system determines whether the fish in the fish tank can survive for a long time."

Filters are roughly divided into three categories, physical filtration, biological filtration, and auxiliary filtration.

Physical filtration is what Wang Qian and Li Kun said to filter fish dung and unfinished food residue.

Auxiliary filtration, the nitrogen cycle system, converts the ammonia produced by the decomposition of fish manure into nitrates, which are nearly non-toxic to fish.

Auxiliary filtration includes protein separator, ozone generator, calcium reactor, denitrifier and ultraviolet germicidal lamp, etc.

Every time he said one,

Just point to the corresponding equipment and let them memorize the shape and name, so as not to be confused. As for the purpose of each equipment, it will not be too late to memorize it later.

In addition, there are different kinds of lights, heating rods, hydrometers, various test strips, and miscellaneous things.

Not all of these devices were mailed by Karl from Germany, many of them were purchased online before he returned to China, and some insignificant devices do not need to be too high-end.

Wang Gan took out a hand-copied net from a packing box, and asked wonderingly: "Master, it is enough to buy a few hand-copied nets, why do you buy a box as soon as you buy it? After using up so many hand-copied nets Is it copying the net? It means that the seller is not willing to sell only one piece, but only sell it in boxes?"

Li Kun also felt the same way, they all thought that such extravagance and waste was not in line with Zhang Zian's usual style.

The specification of this whole box of hand-copying nets is 100 pieces, which are divided into several colors.

"That's not true." Zhang Zian dragged, "I'm just going to remind you that if you need to fish out of the fish tank in the future, you must remember that each fish tank corresponds to a hand-made net, and you must not mix them, otherwise Once a fish in one tank gets sick, it quickly infects all the other fish."

"Oh, it's like a syringe that can't be used repeatedly?" Li Kun was stunned.

"Almost." Zhang Zian affirmed.

When you usually go to the fish market, fish shop or aquarium to buy ornamental fish, what the customers see is the thriving scene in the fish tank. When they see the shopkeeper counting the money with a smile, they would never think that many shopkeepers open the shop every morning. The first thing is to cry and throw dead fish out, so-called only thieves eat meat, but no thieves are beaten.

Fish residues are characterized by slow onset, long cycle, and high infectivity. Basically, it is useless to wait until the neck is recovered. Therefore, early prevention and timely isolation of the source of infection are very important, and mixed use of hand-made nets is an important but often overlooked one. Infectious media, many shopkeepers who opened a fish shop with a hot mind paid tens of thousands or hundreds of thousands of tuition fees before they were enlightened.

On this point, Carl specifically reminded him.

The first task Zhang Zian assigned to Wang Qian and Li Kun today was to use self-adhesive labels to affix serial numbers to each handwritten net, from 1 to 100, to correspond to each aquarium one by one, and they must not be mixed. .

They nodded yes.

"Is there anything else I don't know what it is for?" Zhang Zian asked again.

Wang Qian and Li Kun looked at each other.

Zhang Zian felt that their expressions were a bit strange, "What's wrong? Just ask if you don't understand, don't pretend to understand. It doesn't matter if you understand, no one understands at first."

"Master, we understand the truth," they stammered, "but"

"But what? Just tell me if you have any questions." Zhang Zian urged, "I have something to do later."

Li Kun took out a packing box from behind, "Master, you asked us to sort out the courier and move it here, but we really don't know what this thing is for. We thought it was sent by mistake at first, but the recipient is indeed yours." name"

Tremblingly, he took out a set of pale blue bikini swimsuits with pitiful fabrics from the packing box, holding one in each hand.

"Master, can you tell us what you are buying this for?"

Zhang Zian looked calm, "Oh, I bought it as a gift."

They said tearfully: "Don't lie to us, Master, even if you are a master of women's clothing, we will not despise you!"

"Where are you guys thinking? I'm just giving it away!" Zhang Zian clarified almost desperately.

God knows how the brains of these two bastards grow!

"But you don't have a girlfriend, and you don't have a wife. Who are you going to give the bikini to? It's not appropriate for ordinary female friends to give this?"

Zhang Zian was at a loss for words, he couldn't say that there was a mermaid in the bathtub, and it was for her, right?

"It's none of your business who I give this to! Can I keep it for use?"

"collect?"

Wang Qian and Li Kun listened, and the eyes they looked at him had been upgraded from "abnormal" to "big abnormal"

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