What kind of filter?

If no CO2 injections were needed to be added which would be more efficient?
 
Hello :D
I'd go for the canister - Eheim if price isn't a factor. If you really want thriving plants, you don't want the surface agitation from a power filter. If you ever do decide you want surface agitation, you can always buy a spray bar attachment, and voila! You have the best of both worlds.
 
Thanks that seems perfect. You two have been a great help.
 
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