Filter or syringe
Right now I have my diy co2 being diffused directly through my hob filter intake. I also read posts how people use a syringe and cotton, similar to the glass diffusers with the ceramic disc. The filter method seems to be working rather well, my swords are really pearling. Then I read this could damage the impeller over time. I like the filter method because I know its working. Then on the other hand I don't want to shell out extra $ for a new filter later. Is this syringe method effective?