[APD] CO2 reactor help

[Clint Brearley <clint_brearley at telstra_com>]

I recently put together an external CO2 reactor as described here http://www.aquaticscape.com/articles/co2reactor.htm (except without the CO2 inlet as I plan to just keep adding the CO2 though my filter intake).

I connected it inline with the intake and started up the filter which ran for about 20 seconds and then gurgled, burped and airlocked. I could restart the flow by pumping the primer but it would always seize up again. So I disconnected it, restarted the cannister and everything is back to normal.

So why isn't it working? Is air sucking in somewhere? Is my pump to small/large? How can I get it working?

Filter is Hagen Fluval 204, rated at 680 lph (180 gph), height from pump to outlet is about 80 cm (2'7" or 31").

Thanks.

Clint Brearley
Melbourne, Australia

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