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At a glance...
  • The perfect CO2 system for your planted aquarium
  • Features all the connections and delivery units needed
  • Easy to setup and maintain
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From £449.99 Regular Price £479.95 Save £29.96

The JBL M503 CO2 Set

Carbon dioxide is a vital component for the photosynthetic process plants need to grow in health and vibrancy. As it is not produced naturally in the aquarium, it's essential to ensure the right level is available in your tank.

The M603 Set comes complete with everything needed to supply a source of CO2. 500g of CO2 is provided in a sturdy gas bottle, it is disseminated around the tank via the efficient Vario diffuser, which can be extended via extension kits (available separately).

The precise pressure reducer has a pre-set operating pressure, so accurate doses of CO2 can be administered. The whole system is designed to work as smoothly as possible, to provide all of the life within your aquarium with the best quality water.

This model also includes the JBL ProFlora digital control device to monitor the pH level in your tank. The unit also includes a night shut off valve which can be used with a timer (not included) to turn the CO2 off in the evening. A pH value of between 6.8 and 7.4 is ideal depending on the carbonate hardness (KH) of the water.

JBL offer the following advice so that you know how much CO2 to add. The carbonate hardness of the water and the pH value denotes how much CO2 is needed. Begin with a bubble in every other bend of the device and slowly increase the number as required, over several days. Full installation instructions are included.

What's in the box?

  • Gas bottle with 500 g CO2.
  • Stand for gas bottle.
  • Precision pressure reducer.
  • CO2 vario diffusion system (aquarium height min. 30 cm).
  • Safety valve.
  • Connecting hose 4/6 mm.
  • PH control device (with built in night time cut off).
  • CO2 permanent test.
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