Surface Film and Agitation

[mohican]

I'm still experiencing some surface film on my 125. I currently have 2 canister filters with spray bars pointed towards surface. I was told this would help alieviate the problem but its still there. My question is should I add a HOB filter in-between the canisters or get a powerhead to add more surface movement? would this much surface aggitation difuse CO2 levels too?
Thanks.

 

[Oceangirl]

I think yes it will effect your on your co2, because co2 is a gas and that why you want surface agitation in non co2, because that causes gas exchange from the surface of the water into the air.

 

[blert]

CO2 injected tank?
Yes, it will gas off more CO2.
Decrease feeding and increase PWCs.

 

[mohican]

I use a sicce life for CO2 dosing, so its difficult for me to give actual parameters of CO2. I just moved the spraybars upward on Sunday so I guess I will just wait and see if it gets worse or clears up. I do have a couple HOB's on backup in case I need to add one for more circulation.