geo 618 help , no co2

[sean2sean]

i have a geo 618 that i got from so cal tropical. it has been running great for the past 6 month. but im not sure why i just recently notice that there is no co2 going into the bubble counter.

so i checked the co2 tank and it is still full. i have a 20lb tank. and pressure is at 1200 and 6psi.

i have my reactor plumbed with a manifold from my main return pump.

when the return pump is off. i am able to blow through the tube and the check valve where usually the co2 tank is connected (bubbles would appear in the bubble counter).

but when the return pump is on, i cannot blow through it.

there seems too be too much pressure.

is there a solution to the problem?

thanks!

[dochou]

I have the same problem. Did you ever figure out how to fix this problem?
thanks.

[chadfarmer]

regulator? problem

can u turn down the flow to the reactor

[fishyguy7]

if you can blow through the CO2 line and check valve then my guess would be too much water pressure in chamber. what kind of pump are you using to feed the reactor