The relationship between Zhao Welder and Wu Electrician was closer, and the next day, he repeated the incident he met with Wang Electrician yesterday to Wu Electrician, and was immediately beaten by Wu Electrician.

Electrician Wu scolded him for being ungrateful, how can you believe what others say? Do you know if Wang Carpenter recommended that aquarium because he took a kickback from that aquarium? Maybe he will get a benefit fee for every person he recommends to enter the store?

was scolded by Wu electrician, Zhao welder hesitated again, he felt that both sides seemed to make sense, so he decided to go shopping on both sides. Taking advantage of the opening celebration of Qiyuan Aquarium, he followed Wu Electrician to come here first, and then went to another one tomorrow or the day after tomorrow.

Zhao welder spoke, Wu electrician added on the side, and by the way, he exposed his shortcomings, which finally made Zhang Zian understand what they were arguing about.

Electrician Wu took a breath and said, "Xiao Zhang, this is a stubborn donkey, I can't convince him...... Tell me, is what Wang Carpenter said true?"

Zhao Welder wanted to refute, but in the end he didn't speak, because he also wanted to know whether what Wang Carpenter said was true or false.

Zhang Zi'an pondered his words and said, "Actually, what he said makes sense......

Welder Zhao opened his mouth and was about to mock Electrician Wu, but he heard Zhang Zi'an continue: "But what he said is not the truth. ”

"What do you mean by that?" asked Electrician Wu.

Zhang Zi'an explained in detail that there are roughly three schools of saltwater fish opening tanks, one is the live stone opening tank, which is what Zhao welders used to do; the second is the dead stone opening tank, boiling the living stone with boiling water, and even using drugs to kill all the organisms and microorganisms attached to the living stone, and then put it into the fish tank to raise fish; the third is the artificial stone opening tank, which is similar to the dead stone opening tank, but omitting the disinfection step.

Interestingly, basically only China is almost all with live stone to open the cylinder, and foreign is the dead stone to open the cylinder occupies the absolute mainstream, a small part of the artificial stone to open the cylinder, very few people use live stone to open the cylinder, and some countries also prohibit the use of live stone to open the cylinder...... There is a strong contrast between domestic and foreign.

Zhang Zi'an learned to run an aquarium from Karl in Germany, and of course he also learned the theory and technology of opening a tank. Still, he has an idea of the pros and cons of these three genres.

There was no basis for his words, so he beckoned Li Kun to bring over a living stone that had not yet been used.

Most of the living stones in his shop are wholesaled from the fish market, and most of them have been turned into dead stones after treatment, and a few are still in the state of living stones.

Li Kun brought a plastic basin, which contained half a basin of seawater, and a natural living stone was soaked in it, and the surface of the living stone was slightly brown, full of wrinkles and pores.

"This living rock should be similar to the reef in your home. Zhang Zi'an rolled up his sleeves, fished out the live stone from the water, and motioned to the two old men to see.

They nodded.

Immediately afterwards, Zhang Zi'an made a move that they didn't expect, put a cotton cloth on the ground, put the wet live stone on the cotton cloth, took out an iron hammer from the toolbox, and smashed it down according to the live stone!

With a click, the living stone split into four or five pieces from the middle, and the sea water contained in the inner cavity flowed all over the ground.

"This ...... What is this?" Electrician Wu exclaimed.

After the living stone cracked, some small, strange-shaped creatures flowed out with the seawater.

Bugs with bristles, wriggling tubeworms, tiny translucent sea anemones, small crabs crawling around, small shrimp with bright colors, and some creatures that are completely indistinguishable...... They never imagined that there were so many things hidden in this small living stone.

Zhang Zi'an pointed at these creatures with the handle of the hammer and introduced them to them one by one, "You have seen this, the bristles of the same kind as the sand silkworm - the bristle is actually useful, it can help you turn the sand and clean the crevices of live stones, the tubeworm and sponge creatures are also useful, they can filter water, the existence of hairy crabs and mantis shrimp has both advantages and disadvantages, and as for these ghost hand anemones, they are a notorious scourge in the fish tank...... Putting living stone into the tank, which means bringing all of these creatures into your tank, may sound like a plus or con, but the benefits that live stone provides can be replaced by something else, and the disadvantages are a headache. ”

He did not clearly say the advantages and disadvantages of dead stone and live stone, because existence is reasonable, and live stone can be so popular in China, so that it will not be useless.

Wu Electrician asked curiously: "Why is dead stone popular abroad, but live stone popular in China? What is the reason? Is it just because of different concepts?"

"Not exactly. Zhang Zi'an shook his head, "Live stone is popular in China, because the performance of protein skimmers in the past is generally not good, and there is no way to completely remove the pollution in the tank by relying on eggs alone, and can only rely on live stone to explode algae to accelerate the process of water cultivation...... Over time, this last resort has become the mainstream in China, even if the performance of high-end eggs is more than enough, many people will still take it as a guideline. ”

Wu Electrician immediately said to Zhao Welder: "Look, I said it, right? Do you have to listen to that Wang carpenter's words, do you think he really understands?

The conversation between them drew the rest of the store into the shop, frowning at the creatures that were scurrying around in the living stones, and the bristles and the like were hard to look at.

After listening to Zhang Zi'an's explanation, everyone had a refreshing feeling.

Zhao welder was not convinced, and said loudly: "The living stone is treated as a dead stone, what about the beneficial bacteria attached to it?"

Zhang Zi'an expected him to ask this question, and led them to the nearest aquarium with a bottom cabinet, squatted down to open the bottom cabinet, and let them see inside.

"Huh, why is there a small jar hidden in the bottom cabinet?" said Zhao welder, surprised.

As you can see, there is a small fish tank in the bottom cabinet, there is nothing else in the fish tank, only a living stone soaked in seawater, and several pipes connect the small fish tank with the filtration system in the base cabinet, which is Zhang Zi'an's customized aquarium.

Zhang Zi'an further explained: "In the large vat above the base cabinet, dead stones are placed, but in order to replenish the beneficial bacteria, an additional vat is added to the filtration system. There is a filter in the pipe connected to the small tank, and bacteria can pass through, but the small creatures hidden in the living stone can't get by, and are stopped by the filter screen. ”

"Boss, what brand is this aquarium? I'd like to buy one too. "Someone's heart is moved.

Zhang Zi'an was waiting for this sentence, and immediately replied: "This is designed and customized by our store, you can't buy it outside, if you are interested, our store can customize it on your behalf!"

When opening an aquarium, the bulk of the profit does not come from the aquarium creatures, but from the peripheral products.