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JBL Proflora Direct 12/16, 16/22,19/25 (Inline Diffuser)

by JBL
SKU J63339
Save 22% Save 22%
Original price $64.00
Original price $64.00 - Original price $70.00
Original price $64.00
Current price $50.00
$50.00 - $56.00
Current price $50.00

  • For an economical and direct plant fertilisation: CO2 diffuser for external filters.
  • Easy to install: connect to hose of external filter.
  • Exact dosing: integrated bubble counter, no water backflow thanks to backflow stop.
  • 20 % CO2 saving due to an especially effective diaphragm.
  • Package contents: 1 ready-for-connection high performance CO2 direct diffuser.



Ideal nutrition for plants:

  • The right CO2 concentration in the water is of great importance for the aquarium plants.
  • Carbon dioxide is the main nutrient for plants and promotes their growth.
  • Plants use the CO2 for the photosynthesis and thus supply the water with essential oxygen.
  • They prevent algae growth, remove pollutants, provide hiding places and reduce pathogens.

Economical and direct:

  • This practical CO2 direct diffuser saves a diffuser in the aquarium, a bubble counter and a check valve.
  • It even saves 20 % CO2 thanks to its ingenious functioning. All that is needed is an external filter with a suitable hose connection.

Easy to install:

  • In order to ensure that the CO2 gas passes as far along the inside of the hose as possible, the direct diffuser needs to be integrated into the hose as close as possible to the external filter.
  • A vertical mounting position will ensure the best readability of the bubble counter.



How can I remove the hose from the device?

> At first the air hoses and special CO2 hoses can easily be pushed on the connection piece. The hoses harden more and more as the months go on and can only be removed from the connection piece using great force. If you pull the hose hard it will only strain the connection, which could, in the worst case, even break off. Instead cut the hoses you want to remove laterally at the ends and carefully remove them. For this it’s always advisable to install hoses with some reserve in its hose length.


What working pressure does the ProFlora direct need?

We recommend a working pressure of 1.0 – 1.5 bar.


Why does the membrane need to be soaked in water for 24 hours?

> To receive a consistent bubble pattern with fine micro bubbles, the modern ceramic PE hybrid membranes need to be soaked in water before being put into operation. If this is not done, large bubbles will occur.


Why does the CO2 Direct create large bubbles?

> In order to enable the modern ceramic PE hybrid membrane to build consistent micro bubbles and to ensure an effective

CO2 spread in the water, it needs to be soaked in water for approx. 24 hours before being put into operation. Do not, therefore, switch on the CO2 supply after installation until the period of time mentioned has passed. Alternatively you can put the membrane into a bowl of water. Without this soaking the pores will not have enough water and will let large bubbles pass with an uneven distribution.


Can the inline diffuser be used in a bio-CO2 system?

> We wouldn’t recommend installing the JBL ProFlora Direct in a bio-CO2 system. The working pressure is not big enough to achieve an even addition of the CO2. Moreover, there is a danger that the pressure will not be able to escape through the integrated check valve, and this can lead to damage in the reaction vessel, if it isn’t able to withstand the pressure.


Is my SafeStop damaged if I can’t blow through it?

> The retaining spring in the check valve fits very tightly and ensures that no water can return. Therefore the air pressure of a diaphragm pump or our breath is not strong enough to open the spring. The valve can be opened by the pressure of the ProFlora bioCO2 systems and also the m and u series. Check valves used in air systems have a smaller counter-pressure and are also part of the JBL range.


I can hear the ProFlora direct whistling / chirping

> In this CO2 diffuser the CO2 gets pressed through a fine diaphragm. Depending on the counter-pressure, this sometimes causes a slight chirping sound. If the sound intensifies during operation this indicates a soiling of the diaphragm or change in the operating pressure. Please clean the diaphragm and reduce the operating pressure, if required.


Why does my ProFlora direct need more bubbles per minute than my old CO2 diffuser?

> The size of the bubbles is essential to providing compatibility. That’s why you cannot compare the number of bubbles in the ProFlora direct with the old method of determining the bubbles (e.g. with the ProFlora Count (safe) or other bubble counters). Depending on the method used, the bubble size can differ by up to 300 %. That’s why it’s important to use the same bubble counter when comparing both systems in order to determine the conversion factor “bubble number in the old bubble counter” to “bubble number in the ProFlora direct”. Since there is no standard CO2 bubble size, it is otherwise difficult to determine the true conversion rate.


The check valve doesn’t seem to let CO2 pass through it. What can I do?

> Please wait until sufficient pressure has built up in the CO2 hose. Alternatively you can sharply increase the CO2 supply for a short time.


The bubble counter doesn’t fill with water. What can I do?

> If there is no water in the bubble counter after the installation, just wait a few hours before switching on the CO2 supply. The water jet of the filter will then cause water to enter it. Alternatively while installing it, you can fill the chambers of the bubble counter with water.