Siting of External CO2 diffuser.

[GaspingGurami]

I got this Taiwan made Vista inline CO2 diffuser that from the illustrations, can be hooked up either to the front of the cannister intake (replacing the intake basket) or somewhere inline, along the filter's outlet piping.

I've hooked up mine to the inlet, but after some time into the photoperiod, the cannister filter seem to be chopping up gas bubbles. This is noisy and also it seem to kick dirt from the filter back out into the tank.

Has anyone tried hooking it at the outlet hose? Is it effective in dissolving all the CO2 injected?

[bclee]

It is meant to be used at the inlet. It is normal for bubbles to go into the filter and get "chopped up" by the impeller.

As for kicking up dirt from the filter, that should not happen. What filter are you using?

I do not think that it will work as well at the outlet.

BC

[GaspingGurami]

[quote:791602cea2="bclee"]It is meant to be used at the inlet. It is normal for bubbles to go into the filter and get "chopped up" by the impeller.

As for kicking up dirt from the filter, that should not happen. What filter are you using?

I do not think that it will work as well at the outlet.

BC[/quote:791602cea2]

I'm using an Eheim 2228. At low levels of CO2 injection (1 BPS or less), there is no problem. Higher than 2BPS, the gas seem to lift out the mulm and re-deposit it in the tank.

[tawauboy]

hooking it to the outlet will drastically reduce the co2 dissolving efficiency. the design intent is to make use of the filter impeller to breakup the co2 bubble.

as for lifting the mulm, let the setup settle for a few days and see if mulm gets kicked out again.