Well, my Dupla CO2 Reactor gave out. It started leaking where the top screws onto the body. The rubber seal looked okay. I must say that thing is a piece of junk. Small inlet/outlet and poor construction. I had another Dupla in-tank Reactor that broke as well.

So now I need to replace the reactor. I was thinking a Aqua Medic CO2 Reactor 1000. I noticed the specs call for a 250gph pump/filter. I was driving the Dupla with a Eheim 2215. I have a 56 gallon tank. Will 160gph be enough to drive this reactor for a 56 gallon tank?

Or does anybody have good success with another reactor. I don't want to get into the diffusers. Trying to keep as many things out of the tank as possible. Hey Tom, have you tried the Cal Aqua external diffuser yet?

Should be fine.
You can DIY if you want to save 60-70$.
Just no longer get to see the bubbles etc.

You can drive more flow than they suggest through a AM1000(350-400gph).
The Cal lab stuff arrived, I've not had a chance to use it yet, looks very nice though(ADA like quality).

Regards,
Tom Barr

Well, I got the AM1000 setup with my Eheim 2215. I have the reactor on the input side of the filter. Even though the AM1000 has a built-in bubble counter, I install another bubble counter before the reactor. I have the reactor mounted way in the back of the stand, so I really can't see the bubble counter. That is why I mounted another one in plain view.

The CO2 setup for this is the following (in order of what is connected to what):
1) 20lb CO2 tank
2) Regulator
3) Solenoid
4) Needle Valve
5) CHeck Valve
6) Bubble Counter
7) AM1000 Reactor

What I wanted to know was, is the check vavle in the proper spot? I was thinking perhaps I should put the check valve between the reactor and external bubble counter.

looks like you have everything correct man. Does the AM1000 offer a purge connection?

I have a Dupla reactor that I have had well over 10 years and, to date, it has worked pretty well. Howveer, its been unused for the last year and has dried out so I'm hoping the o-ring at the top still seals fine when I go to use it. Anyone know where to get the o-rings?
Will

Yes, the AM1000 has a purge connection.

The Dupla Reactor I used to have had some very pathetic threads on the black plastic piece that screws onto the body. You could screw it but it never tightened up really good. tefsom85, Let me know if you need a seal. The seal on mine is still new.

Most places like Home4 Depot have extensive O ring selections.

If the o ring is old and dry, try adding some valsiline, or silicone lubricant

The reactors I made used a larger heavy duty O ring grommet.
You might try McMaster Carr. They sell everything.

Regards,
Tom Barr

Shane, I know this is an old thread, but I was wondering if you have been able to use the AM1000 with your 160gph flow? Please, let me know, I have a pump around 200-230 gph and I'd like to know if the AM1000 is going to work fine...

thanks!

Fab.

I ran the Aqua Medic 1000 CO2 Reactor in a 55g tank with an Eheim 1048 pump 160gph it ran all right, From the purge valve from the reactor i ran a line right before the pump and hook it up to a tee with 1/4 hose bar connection and left the bleed valve open on the reactor.