GEO Calcium Reactor 618 - Help!

Hey guys,
I wanted to give a shout out to George W. (GEO) for some excellent customer service regarding my GEO 618 calcium reactor.

I switched out my 5# CO2 tank for a 20# tank, and as I was tightening the regulator to the 20# tank, my wrench handle caught on the shutoff valve on the cylinder, opened it, and released a TON of CO2 into the 618...blew off and broke off the retaining tabs on the Eheim pump cover, and blew out the glue seal where the PVC union attaches to the clear acrylic top.

I emailed George and he got me out a new top the very next day. Couldn't have asked for better product support...thanks George!
Dave
 
Acro:
Glad you got it solved fast. As a precaution when connecting and first opening the cyclinder valve it is always prudent to unescrew the pressure adjusting knob in the body of the regulator. This way even if the cylinder valve opens there will be no pressure delivered by the regulator.
In any case I am trying to figure out how opening the cylinder valve could have delivered that much CO2 into the reactor. Does the regulator have a solenoid valve? if so was the valve energized (Open)?
 
Hey guys,
I wanted to give a shout out to George W. (GEO) for some excellent customer service regarding my GEO 618 calcium reactor.

I switched out my 5# CO2 tank for a 20# tank, and as I was tightening the regulator to the 20# tank, my wrench handle caught on the shutoff valve on the cylinder, opened it, and released a TON of CO2 into the 618...blew off and broke off the retaining tabs on the Eheim pump cover, and blew out the glue seal where the PVC union attaches to the clear acrylic top.

I emailed George and he got me out a new top the very next day. Couldn't have asked for better product support...thanks George!
Dave



Same thing happened with me and he did the same thing!!!!!!!!!!!!!!!
 
<a href=showthread.php?s=&postid=15454487#post15454487 target=_blank>Originally posted</a> by jdieck
Acro:
Glad you got it solved fast. As a precaution when connecting and first opening the cyclinder valve it is always prudent to unescrew the pressure adjusting knob in the body of the regulator. This way even if the cylinder valve opens there will be no pressure delivered by the regulator.
In any case I am trying to figure out how opening the cylinder valve could have delivered that much CO2 into the reactor. Does the regulator have a solenoid valve? if so was the valve energized (Open)?

The solenoid was energized. Didn't think it mattered since I had the cylinder valve closed.

My regulator/solenoid is a JBJ, and it does not have a pressure adjusting knob in the regulator. I own four reg/solenoid combos and the other three have it. I always turn the pressure nut counterclockwise until it is closed if the reg has one. The JBJ has a brass needle valve that regulates both the pressure on the step down gauge and the bubble count, and I had opened that wide to depressurize the solenoid when I disconnected it from the 5# CO2 tank, thus the open path for the gas into the reactor when the wrench handle opened the cylinder valve.

Here is a pic of mine, except I don't have the bubble counter. No pressure nut, just a JBJ logo.

http://www.marinedepot.com/JBJ_Dual..._Aquariums-JBJ_Lighting-JB2111-FICORE-vi.html

Dave
 
Hey everyone,
I am still experiencing fluctuations in my effluent line. I currently feed my reactor through a manifold which is powered by an iwaki 40RLXT. I will set the effulent drip and the line is relative straight. I notice that when i come home teh next day, it has slowed down. I think that this is causing me the fluctuations and i think i will try changing to a dedicated powerhead to feed the reactor. Which pumps/powerheads are you guys using to feed your reactors. I have the GEO612 if that changes anything.
 
<a href=showthread.php?s=&postid=15477510#post15477510 target=_blank>Originally posted</a> by Padrino
Hey everyone,
I am still experiencing fluctuations in my effluent line. I currently feed my reactor through a manifold which is powered by an iwaki 40RLXT. I will set the effulent drip and the line is relative straight. I notice that when i come home teh next day, it has slowed down. I think that this is causing me the fluctuations and i think i will try changing to a dedicated powerhead to feed the reactor. Which pumps/powerheads are you guys using to feed your reactors. I have the GEO612 if that changes anything.
Yes a Maxijet 1200 should do, just remember to leave the orifice in the nipple open so water returns to the sump to cool the powerhead, otherwise the amount of effluent flow only will not provide for enough cooling.
 
There was an error in my last post and it lost everything. Long story short:

Now that i have taken the feed line off from my return pump manifold. Should i remove the needle valve that was installed inbetween the manifold and the reactor.

Should i take that valve completely out and install that little black valve that Geo supplied and install it on the effulent line?
 
<a href=showthread.php?s=&postid=15481199#post15481199 target=_blank>Originally posted</a> by Padrino
There was an error in my last post and it lost everything. Long story short:

Now that i have taken the feed line off from my return pump manifold. Should i remove the needle valve that was installed inbetween the manifold and the reactor.

Should i take that valve completely out and install that little black valve that Geo supplied and install it on the effulent line?
Yes completely remove the valve at the inlet and use the little valve at the outlet.
Having said that, the little valve supplied is not that precise for adjusting effluent flow so if it gives you trouble I would recommend a higher quality needle PVC valve for the effluent.
If you are using 1/4" poly-tubing for John Guest fittings look for valve 22326
http://www.usplastic.com/catalog/pr...SPlastic&category_name=15615&product_id=15616
 
My first MAJOR thread!

My first MAJOR thread!

Wow... over 23,000 views!

I started this thread almost 2 years ago and it is still going strong. Its been a long summer, but my mind is turning to my reef now that Fall is almost here. The system is running good but kind of neglected. My GEO 618 has been shut down for months and the corals are all growing. I'm afraid to even think about testing the water. Its go to be way off, but it looks good....

Wish me luck as I re-light the fire on the GEO and pull things back into spec. Slow and easy is my thoughts.
 
I am in the process of setting up a Geo 624 reactor. I am unable to get rid of all of the air from the reactor. With the recirc pump off and the feed pump running, there is a good sized air bubble at the top of the reactor. It doesn't seem to go away. How are you supposed to purge the air from the reactor at initial setup? I thought that eventually running the feed pump would cause the bubble to be evacuated, but this doesn't seem to be the case. I am currently running an aqualifter to feed it. Also, for anyone that is using an aqualifter, how did you attach the 1/4" tube from the aqualifter to the fitting on the reactor? Thanks for the help.

Mike
 
Sorry, been busy.
Usually you purge the air of the reactor by fully opening the effluent valve which is at the highest point in the recirculation loop.
To connect the aqualifter, try using 1/4" poly-tubing like the one used for RO/DI systems.
 
<a href=showthread.php?s=&postid=15737479#post15737479 target=_blank>Originally posted</a> by jdieck
Sorry, been busy.
Usually you purge the air of the reactor by fully opening the effluent valve which is at the highest point in the recirculation loop.
To connect the aqualifter, try using 1/4" poly-tubing like the one used for RO/DI systems.

That is what I thought and tried. I tried leaving the effluent all the way open with and without the recirc pump on. Should this be done with the recirc pump on or off? Maybe I am not being patient enough.

Also, the aqualifter uses 1/4" tubing but the reactor takes 3/8" tubing. Right now I slipped the 1/4" into the 3/8" and used zip ties to hold it tight. Seems to be working fine, but I am sure I could order a barb adapter and have a better connection.
 
<a href=showthread.php?s=&postid=15737716#post15737716 target=_blank>Originally posted</a> by Rizup
Also, the aqualifter uses 1/4" tubing but the reactor takes 3/8" tubing. Right now I slipped the 1/4" into the 3/8" and used zip ties to hold it tight. Seems to be working fine, but I am sure I could order a barb adapter and have a better connection.

some people remove the 3/8" barb and put in a 1/4" adapter for the sake of simplicity and security.
 
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