This aquarium plant consists of long, fairly brittle stems and very thin leaves that can reach 4 to 5 cm. Plant very fast growth it should be placed in the center or the bottom of the tank.
Because of this rapid growth, it is considered a quality ally in the fight against algae. It absorbs a lot of nitrates to grow and also releases a substance that is toxic to algae. But nothing is shown regarding this anti-algae substance and do not wait for a miracle if your tank is invaded!
Ceratophyllum demersum Care
Ceratophyllum demersum has the characteristic of not having roots and it will be possible either to ballast it so that it reaches the bottom of the tank, to hang it on a support, or to let it float.
The principle of leaving it floating can be two major drawbacks: shade other plants and retain fish food. So I chose, at first, to gently group the strands and tie them with a lead link provided in the pet shop, then let the bouquet flow to the desired place.
Unfortunately, despite being assured that lead did not worry about water, I read that there were still potential risks, albeit minimal ones. It is therefore best to avoid lead ballast.
Here is another way to ballast the ceratophyllum: Make a bouquet with the strands to the desired length. Take a pipe (like those used for the external filters) and cut it in the lengthwise direction.Then just insert the strands into the pipe, the operation being facilitated by the fact that it is cut and that we can open it to pass the strands. Then close the pipe by pressing on it and plant it in the sand. Thanks to the members of Aquasquale for this tip …
As it grows very fast it will be necessary to cut it often so that it does not invade the tank. To do so simply cut the stems too long and collect them with the other stems. The cut stems will quickly make new lateral stems.
Ceratophyllum demersum Aquarium
Ceratophyllum demersum is not very demanding on the parameters of the water of the aquarium. Ph between 6 and 9, temperature between 10 and 30 degrees (so also suitable for cold water tanks), and indifferent hardness. It just needs enough lighting.
Warning: chemical treatments can kill your ceratophyllum in a few hours! A simple disinfectant made me lose all of a bouquet. So think about removing it if you have to deal with your bin.
Ceratophyllum demersum Pictures