mazzei question

jazzlvr123

Guru Class Expert
Jul 3, 2007
108
0
16
Tom Barr;29452 said:
for the O2, you simply add a check valve(2 good brass ones) and a Tee on the CO2 line, then to your small air pump set on a timer.

This way the CO2 goes past and cannot back up into the air pump and out(losing CO2 to the air outside). When the air pump comes on, the solenoid for the CO2 is closed, so the air opens to check valve from this direction, and enters the mazzei.

An air pump + a check valve etc cost less than a solenoid.
You can do it with a solenoid also.

Regards,
Tom Barr

I am somewhat confused on this setup. the mazzei sucks so hard that when I have the co2 on, the mazzei sucks from the o2 and co2 line simultaneously mixing o2 with co2. the only way i can keep this from happening is reversing the check valve on the o2 line keeping anything from entering the o2 tube. does an air pump have restriction from o2 getting sucked from it? how do you keep the o2 from leaking when the co2 is on?

this is my setup (please ignore the dots i had to add it because my diagram got all scrunched up and un-legible when i tried to post it using spaces)

........................mazzei
.............................||
.............................||
......|=======brass tee========|
......||............................................||
check valve
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
18,696
745
113
I keep them(CO2 and O2) entire independent and separate.

Regards,
Tom Barr
 

jazzlvr123

Guru Class Expert
Jul 3, 2007
108
0
16
Tom Barr;34651 said:
I keep them(CO2 and O2) entire independent and separate.

Regards,
Tom Barr

so where do you connect the o2 if its independent from the co2?
 

Gerryd

Plant Guru Team
Lifetime Member
Sep 23, 2007
5,623
20
38
South Florida
jazz,

I THINK that:

the 02 air pump is not on when the c02 is.......the check valve on the o2 line will keep c02 from entering/exiting the pump,

I think your plumbing is good in your pictogram. 02 and c02 are on separate timers so they are not on at the same time...
 

jazzlvr123

Guru Class Expert
Jul 3, 2007
108
0
16
Gerryd;34682 said:
jazz,

I THINK that:

the 02 air pump is not on when the c02 is.......the check valve on the o2 line will keep c02 from entering/exiting the pump,

I think your plumbing is good in your pictogram. 02 and c02 are on separate timers so they are not on at the same time...


co2 does not back up into the air pump however the suction on the mazzei is so great that o2 keeps injecting in the mazzei when the even when co2 is on. I don't want o2 to mix with the co2 when lights are on and I think my only resolution to that is a 2nd solenoid