Some prefer it a bit saltier.

Curtis

Actually, CO2 passed through a chamber with calcium rocks is used in marine aquaristics to maintain the pH at 8.3. This is for reference.

Lynn4242

It is not for maintaining pH, but for increasing calcium content; pH actually drops due to carbon dioxide... this is a downside of calcium reactors.

Christopher8654

So why don't they install a calcium reactor when there are decorations made of natural stones from a coral reef, and just let CO2 pass through? "pH actually drops due to carbon dioxide" Are you not familiar with buffer systems, particularly carbonate ones? And that zooxanthellae need CO2 for photosynthesis... right?

Rodney

Guys, what made you think that the guy has a sea?

Ricardo7341

How is that??? Right in the aquarium?? Talented...... Unfortunately, no, I would appreciate some clarification. No, zooxanthellae are located in the host's tissues and receive CO2 directly from the host...

Randy

The text you provided has been translated to English as follows: As you mentioned, directly into the aquarium... Talented... Yes, indeed, right into the aquarium. What's the difference from your point of view? I would be grateful for an explanation. In short, against dozens of kilograms of CaCO3, hundreds of kilograms of CO2 are needed to shift the pH from the8.3 mark using aeration. If the aquarium contains only plastic and no calcareous rocks, then the problem of reducing the pH with carbon dioxide is very acute, even with the presence of a calcium reactor. They get CO2 directly from the owner... Undoubtedly. But this. But this alone is not enough in the conditions of the aquarium. Incidentally, I am absolutely not against the fact that calcium is thus translated into the solution, but the problem of pH is more (and much more) relevant in the closed space of the aquarium. And Kostya is right. We nee

Wesley

The difference is that at the mentioned pH values, calcium carbonate does not dissolve, and carbon dioxide needs to be injected into the aquarium until it reaches almost neutral levels and high concentrations of CO2, which invertebrates (six-armed and eight-armed corals) are unlikely to tolerate. In practice, the pH drops to eight even without CO2, and with a calcium reactor, it can go even lower.

Theresa5149

While I was browsing the forum, I thought about what we have created here. Now I look at your four lines and can't even express my feelings about what has been written. The thought is increasingly arising that we might be talking about the same thing, and moreover, understanding it in the same way (God willing), but the limitations of these short responses can lead, so to speak, to misunderstandings. The suggestion is as follows. Present your thoughts in the form of an article, and I will present mine, and we can post it in the FAQ. (In general, I would even create a section for "Publications" so that we could post some articles from forum members.) Then we can discuss all of this.

Kellie

I understand that it's better not to let article publications go unattended. Send them to me - I will post them in the FAQ or create a "articles" section. After all, in reality, most websites publish reprints. Authorial articles are what we can be proud of.

Gabrielle5053

The injection of CO2 directly into the aquarium is a complete nonsense: firstly, for the dissolution of calcium carbonate in seawater, the pH level must be lowered to 6.7-6.5, at which level all aquatic organisms will perish. Secondly, there is no point in dissolving calcium-based rocks in the aquarium - not only do they serve as decorations, but the live rock is also an ideal bio-filter. Thirdly, as has been correctly noted, the pH in the aquarium drops even without the use of CO2 - this is facilitated by the organic matter released by the inhabitants (the main source), so the task of the aquarist is to prevent the slightest possibility of pH drop, even by the metabolic products of the animals - let alone any aeration of the aquarium itself. Sin

Whitney

Blowing CO2 into an aquarium is nonsense - it will kill all the inhabitants. The CO2 kit is used in combination with a calcium reactor, not to maintain pH, but to maintain calcium levels. It works like this: carbon dioxide is fed into the calcium reactor, causing the pH to drop, which leads to the dissolution of calcium-containing material, and then this solution is fed into the sump. This may result in a slight pH decrease (0.1-0.3). To maintain the desired pH, a lime water (calcium hydroxide) solution is added. When the water level in the aquarium drops, a dosing pump is activated to pump purified (non-saline) water with dissolved powdered lime water (pH of lime water can be

Nicole2404

My apologies for the delay in providing the promised information. I am simply quoting a report from one of the multinational corporations on water technologies (including fish production). We have made tremendous efforts in developing incubators and growing technologies for many marine fish. The red drum, Sciaenops ocellatus, and the black drum, Pogonias chromis, have been tested at all stages of development and are ready for aquaculture practices. The most interesting aspect of cultivating red and black drum is that they can be grown in freshwater with proper hardness. We are also testing the feasibility of using southern flounder, Paralichthys lethostigma, as an aquaculture species. Targeted breeding of this species is underway. We will also experiment with incubation operations for many other marine fish such as grouper, snapper, seriola, and snook. Our reproduction methodology is developing based on fundamental medical and biological research and can be applied to most fish, including t

Jill9137

These types of mullets are brackish water species, and like all other brackish water fish, they can live in freshwater. It is known that there is a critical point of 21 parts per thousand, which cannot be crossed by either purely marine fish or brackish water fish. Anadromous fish are not taken into account.

Emily

Hello! So what? I would like to know more...

Anne

2

Angel2396

The most interesting aspect of cultivating red and black tilapia is that they can be grown in freshwater with the proper hardness. What more details? Is the hardness of seawater needed? Or the methodology for working with references on the Internet?