In stock, only 16 left
  • Original spare part from JBL
  • Easy replacement in case of loss or wear
  • Replaces suction cup & seal JBL ProAquaTest Permanent CO2/pH Version 2
In stock
  • Safe determination of the CO2 content
  • You needn't mix this indicator with aquarium water
  • Easy to read
  • Perfect for optimising the CO2 content of an aquascape