| I really can not tell from the picture how the thing works. I have never seen one.
Is it a submersible pump/reactor thing? There has to be an inlet for CO2 and one for water, looks like the impeller swirls the water and CO2 around in the chamber. There has to be an outlet for the water CO2 mixture and some kind of burp hole for O2 buildup.
I bubble CO2 directly into my 250 liter/hr powerhead. I use a chopstick piece in the end of the hose to break up the bubble, and the power head impeller
creates a micro mist of CO2. IMO much better and much more efficient than a CO2 reactor.
Call or Email the manufactures customer service and get them to clue you in.
Your plants are going to be fine for a while (a few weeks), until you figure it out. I would nip over to the lfs and get a bottle of Seachem "Excel" to use while you get your CO2 system tuned up.
If the reason you are injecting CO2 is high light, I would cut back on the Watts, not the time, until you are ready. I would also cut back on dosing your nutrients as uptake will be much less.
Regards,
Jay | 
