Good day

My name is Gabriel and I am living in Romania.
I am posting here with the hope that someone can
help me with my Dupla co2 system.

I have purchased two weeks ago a Dupla Delta S set which has,
as you probably know, also a Reaktor 400 included but I do
not seem to make make it work properly.
I read the instructions manual hundreds of time hoping that
I have missed something essential.

My current setup is - Dupla co2 bottle of 1kg , Dupla bubble
counter filled with glycerine, Dupla co2 long term test, Dupla
Reaktor 400 with the 6th hole unplugged, a Hagen powerhead
with adjustable flow from 0 to 450 liters per hour connected
to the reaktor only, 1 bubble every 6seconds. My aquarium
is 80 x 30 x 40cm - 96liters - abt 80liters net,ph 8.5, kh 8.

After one week while the co2 was continously on - day and night -
the Co2 test still shows the blue color.

I am absolutely sure that I have installed the reaktor correctly
i.e. completely immersed (actually abt 5/6 cm bellow the surface),
the water goes through the black hose in the central chamber (the
one with the minicaskade inside),the co2 goes in the 1st lateral
chamber and the 6th capacity hole is open/unplugged.

My problem is that if I decrease the water flow through the reactor
and also the bubble rate (I have succeeded to adjust even down to 1
bubble every 15seconds) some bubbles still escape through the 6th
capacity hole in the reactor. If I increase the water flow keeping
the same bubble rate or increasing it a bit some gas in the central
chamber is pushed down and out of the reactor through the lower screen.

I have tried to turn on both the water and the co2 in the same
time or first to fill the reactor with gas and then to turn on
the water but the result was the same.

When I have received the package the co2 bottle was filled
with gas. I have not done any test to see if it is co2 inside
but I do presume that it cannot be filled with another
gas as it has a special valve thread used only for co2.
I am telling you this because it looks that, no matter what approach
I am using, I am losing too much gas and the color of the co2
test does not switch to green which means that there is not enough
co2 disolved in the water.

Thanks beforehand for your help.