Spio Diffuser

Discussion in 'Carbon Dioxide (CO2)' started by mike_low3, 22 Oct 2009.

  1. mike_low3

    mike_low3 Member

    Messages:
    35
  2. Dan Crawford

    Dan Crawford Founder Staff Member

    Messages:
    3,268
    Location:
    Daventry, Northants
    No you don't have to fill it with water, generally they just end up with water in them anyway but you don't NEED water in there. They are pretty good diffusers.
     
  3. mike_low3

    mike_low3 Member

    Messages:
    35
    Thanks for the reply, just wanted to check first !
     
  4. Dolly Sprint 16v

    Dolly Sprint 16v Member

    Messages:
    1,611
    Location:
    Cheshire

    Mike

    Here is an S8 in action
    DSCN3425.jpg

    Over a 24 hrs period it self fills itself

    Larger in overhaul length and bought form here;
    http://cgi.ebay.co.uk/Spio-VIII-CO2-Dif ... 3a4fb700a3

    Regards
    Paul.
     
  5. mike_low3

    mike_low3 Member

    Messages:
    35
    After looking at your picture, it made me think about my setup, I have my current diffuser just next to my eheim inlet, I would say about half the CO2 being produced is being sucked in, the other half moving up to the surface, I'm noticing terrific plant growth on that half of the tank but not on the other side so I'm thinking the CO2 is not travelling that far.

    What's your view on the CO2 travelling through the eheim, do you output via a spraybar, do you have any problems with CO2 build up in the filter ?
     
  6. Themuleous

    Themuleous Member

    Messages:
    4,126
    Location:
    Aston, Oxfordshire
    Just so you know, that glass spiral does nothing other than allow you to count the bubble rate, it doesn't affect the co2 diffusion in any way :)

    Sam
     
  7. Dolly Sprint 16v

    Dolly Sprint 16v Member

    Messages:
    1,611
    Location:
    Cheshire
    Mike

    Prior to using the diffuser I was using an AM 1000 reactor which mixed the gas with the returning water from the filter - which was ok but I ended up with a tank full of tiny bubbles, the main reason for the change of distrubtion was that the reactor slowed by returning flow by 157 lph. Now with the diffuser fitted and positioned underneath one of the intake pipes all the gas (now tiny bubbles) get drawn into the filter and mixed and return into the tank via a glass lily pipe - if you look at the picture and look through the tank to the far end you will see the lily pipe. I believe that my gas is being mixed better, the only issue I have is that after a water change the filter unit coughs as I get a mass of tiny bubbles after every cough this could be air in the system or a build up of Co2 gas - this only lasts a couple of hours as I know of ! the following day no coughing - hope this helps you in making a decision to try the above method.

    Regards
    paul.
     
  8. mike_low3

    mike_low3 Member

    Messages:
    35
    I've adjusted my eheim inlet and have the diffuser underneath it now, I've noticed in the two days I've been running like this that I've had to turn down the CO2 flow, so I must be getting better CO2 saturation in the returning water, my drop checker is a good lime green. I am getting the occasional cough from the filter but it doesn't seem to cause a problem.
     
  9. Dolly Sprint 16v

    Dolly Sprint 16v Member

    Messages:
    1,611
    Location:
    Cheshire
    Mike

    Spot on then :thumbup:

    Paul
     

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