DENNERLE CO2 plant fertilizer set Primus

For aquariums up to 200 liters.
Advantages of CO2 fertilization:
CO2 partially dissolves in the water as carbonic acid. With CO2, the pH value (acidity) of the aquarium water can be adjusted to optimum, near-natural values for fish and plants. Aquarium fish in particular prefer slightly acidic water as it has a positive effect on their sensitive skin. Important trace elements for plants and fish are better absorbed. Unsightly limescale deposits on the leaves of plants (biogenic decalcification) are avoided. Good plant growth = no algae. Algae have practically no chance in aquaria with well-growing aquatic plants. Algae-promoting nutrients such as phosphates and nitrates are immediately absorbed by the plants. However, if there is a lack of CO2, plant growth comes to a standstill. Excess nutrients are not consumed quickly enough. This is when algae have their chance, as they can get by with even small amounts of CO2. Good planting and regular CO2 fertilization are therefore among the most important preventive measures against algae.
Complete set, consisting of:

Convenient 500g disposable CO2 bottle
Evolution Primus CO2 pressure reducer
Special CO2 return safety device
CO2 hose 2m
Special CO2 indicator