Kum altı ısıtma
Kum altı ısıtıcı ile bitki köklerine besinler ulaştırılır
Bir kum altı ısıtıcıyla suda zengin bitkilerin büyümesini, kum altında bir su sirkülasyonu yaratarak, besin açısından zengin suyu doğrudan köklere yıkayarak yükseltirsiniz. Bir kum altı ısıtıcı, akvaryumun alt panelindeki eğri çizgiler halinde döşenmiş uzun bir ısıtma kablosundan oluşur. Su doğrudan kabloda ısınır ve yukarı doğru yükselir. Soğutucu su, kablo halkaları arasında akmaya başlar, alt kısımda besin açısından zengin suyu bitki köklerine kalıcı olarak yıkayan bir su sirkülasyonu yaratır. Sadece çok ince alt tabakalar (ince kum) alt tabaka ısıtma için yeterli su sirkülasyonunu önleyebilir. Bu durumda, sıcaklık istenmeyen bir şekilde altta sıkışabilir. Bu nedenle kum altı ısıtma kablolarının yalnızca yaklaşık 0,8 mm'lik granül boyutlarına uygun olması gerekir.
Bir kum altı ısıtıcı akvaryum suyunuzu ısıtmanız anlamına gelmez, sadece alt alanda “mikro sirkülasyon” yaratma görevi görür. Bu nedenle, yerden ısıtma kablosunun gücü, ısıtıcılardan önemli ölçüde düşüktür. Burada bir kum altı ısıtmasının nasıl kurulduğunu okuyabilirsiniz: Kurulum tekniği .
Which wattage is right for your aquarium?
If you look on the packaging of the substrate heating cable JBL PROTEMP b III to find out which aquarium size the heating cable is suitable for, you will see a wide range. For example, the smallest substrate heating cable, the JBL PROTEMP b10 , is marked 40-120 litres. The number of litres is actually not the decisive factor, but the area on which the substrate heating is to be laid out! That’s why it says 40-80 cm under the number of litres. In a 40 cm aquarium, the length of the substrate heating cable (e.g. 3.6 m for the 10 W version) would be sufficient for the entire substrate. In an 80 cm aquarium, the loops of the heating cable would only cover part of the bottom pane. This can actually be quite useful as lots of aquariums only have plants in the rear part! So before laying the substrate heating cable, think through where the plants will be and only lay the substrate heating cable there. Aquarists who have covered the entire front part of the aquarium with grass plants will usually have to refer to the smaller aquarium size on the range specification.
It’s perfectly normal for the wattage of the substrate heater to be much lower than the wattage of your heater thermostat. The heater thermostat (e.g. JBL PROTEMP S 25 ) is designed to bring the water temperature of your aquarium to the correct value for your fish species, e.g. 25 °C. The substrate heating cable, on the other hand, is only intended to heat the water right at the cable so that the heated water rises and creates water circulation in the substrate. Very little energy (watts) is needed to create this water circulation.
What’s important when installing a substrate heating cable?
First of all, there is the timing: the installation is only possible with an empty aquarium. Try to stay calm if your pet shop salesperson decides to recommend a undergravel heating cable after you have bought your entire setup equipment from them.
BEFORE you lay the cable in loops at the bottom of your aquarium, consider which areas you will plant. You’ll only need the heating cable in these areas.
And you’ll probably intend to put a long-term plant nutrient substrate ( JBL PROFLORA AquaBasis plus ) above the heating cable. Later, when you clean the ground with a substrate cleaner (gravel cleaner: JBL PROCLEAN AQUA EX 10-35 ) and plough the substrate to suck out the dirt, you won't want to pull out the nutrient substate again or get caught in the undergravel heating cable. SO only place the heating cable and long-term nutrient substrate in the planted areas.
The undergravel heating cable consists of a cable part that does not heat up and a part that does. The "cold" cable part should end where the cable enters the substrate.. Only the part of the cable under the substrate needs to heat up. You can identify the transition from the part that remains cold to the part that heats up on the JBL undergravel heating cables ( JBL PROTEMP b III ) by the black marked part of the heating cable.
It’s perfectly normal for the wattage of the substrate heater to be much lower than the wattage of your heater thermostat. The heater thermostat (e.g. JBL PROTEMP S 25 ) is designed to bring the water temperature of your aquarium to the correct value for your fish species, e.g. 25 °C. The substrate heating cable, on the other hand, is only intended to heat the water right at the cable so that the heated water rises and creates water circulation in the substrate. Very little energy (watts) is needed to create this water circulation.