Why use CO2 fertilization in aquarium

The advantages of carbon dioxide - fertilization are obvious:

The CO2 is vital for the plants. If CO2 is well supplied in the aquarium, the plants can grow in a healthy way.
Due to the healthy growth of plants, these can also provide abundant oxygen for the fish.

The water levels of CO2 will also be stabilized.

CO 2 fertilization prevents the uncontrolled growth of algae too.

Today we can say that a CO 2 fertilization is recommended. This can prevent a lot of problems.
Above all, it also prevents the nightmare of every aquarium owner, the rapid growth of the algae. Why? Simply because of the fact that with the healthy growth of aquarium plants, the pollutants in the water will be reduced. These pollutants are usually responsible for strong growth of algae. The healthier are the plants in an aquarium, the fewer problems you have with the growth of algae.
More about algae problems, there are many manufacturers who offer inexpensive entry-level products to provide a solution and give your aquarium a new gloss. The investment will be paid off after about 14 days. The first noticeable effects will be seen.
CO2 - Fertilization may not also be expensive. With a few simple steps, one can get a CO2 system.
CO2 build production in the aquarium itself
What you need to produce a CO 2 - Plant:

Min. 2 glass bottles

2 matching cork

Thin tube, preferably CO 2 hose, but not necessary

Glue

CO 2 Flipper

1 package dry yeast (depending on pool size)

500g sugar (depending on pool size)

The packaging is quite simple, it comes in a bottle. The 2nd Bottle is needed to clean the gas and the bubble counter.

The structure should be as follows:

In bottle 1, the yeast and sugar react with each other required forms to form CO 2 .
Shown as a green line is the hose that connects the cylinder with each other, the tube should extend into the first bottle. The bottles with cork must be sealed airtight, so the hose can be passed out. The hole must have a cork at the center which should be somewhat less in diameter as the tube, so that the tube will be properly pushed through the cork. The tube must be completely sealed.
Use a cork to seal it, no screw must be used, because the cork is also used as an overpressure protection which could occur in the bottle.
The exact dates:
The whole thing is connected with a little taste, as an example:
For a 100L aquarium:

4-7g of dry yeast, about twice the normal amount of yeast

200-400g sugar

1 liter bottle

After about 5-10 hours should start the CO2 production.
Of course you can also use products ready for fertilization.

Tips and tricks for the water levels in the aquarium

Use an aquarium air pump for a water current.Regularly checking the water chemistry is very important and to respond to the measured water levels is even more important. Otherwise, all the measurements have no sense at all. The most important values ??are:

pH - value

Nitrite

Nitrate

KH, carbonate / GH, total hardness

Fe, iron

CO 2 carbon dioxide

Of course, water levels are not of the same values all the time. You can use these values as basis or target to provide an environment suitable for the fishes. Of course, it is also the growth of the plant that determines the CO 2 levels.
On the following pages you will find useful tips about the change of water levels and home remedies to comply with the recommended values.