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Hornwort floating at the surface?

Hello, Concerning "name":Ceratophyllum demersum (very common) and Ceratophyllum submersum (rather uncommon) are known in the aquarium hobby. Concerning "roots":yes it will - growing...

Agua dulce Invertebrados

Jumping animals on the water surface / Springtails (Collembola)

Hello, these for sure are springtails (Collembola). They are very common (for instance, they can also frequently be found in flowerpots) and entirely harmless. They even serve as...

Agua dulce Cuidado

Is it normal that new plants discard leaves? / Is it necessary to remove rock wool?

Hello, Concerning "discard their leaves":this is indeed rather common. Quite a number of plants is grown emersed in the nurseries, i.e. with their leaves in the air (only the roots...

Agua dulce Enfermedades

Is it normal that sera baktopur direct tablets dissolve rather slowly?

Hello, you need to be a bit patient here, the tablets dissolve rather slowly but entirely! This has technical reasons. You can dissolve them in a little water before use without...

Agua dulce

Biopelícula en la superficie

Hola, este tipo de biopelícula (que, por cierto, también puede ser verdosa) puede, a veces, aparecer, cuando están presentes contaminantes orgánicos (proteínas, hidratos de carbono,...

Agua dulce Técnica

seramic calibration: Can you use pH 4 instead of pH 9?

Hello, no, the unit must be calibrated with the pH 9.2 solution mentioned in the instruction. Calibrations with solutions other than the mentioned ones will either not be possible at...

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