hi all- i am planning on a diy co2 setup for my 20 long. what is the best co2 diffueser out there?
i have heard of the hagen ladder and it looks great, but have heard some bad things about them on the forums. what concerns me is that the co2 would not be circulated without a powerhead of some sort.
i like the looks of this one, but wonder if anyone else has used it:
red sea is a candidate as well. is there little system any good or is the powerhead junk? ive never heard of a red sea powerhead so it looks fishy (yuck, yuck!).
finally, what about a simple delivery system like a rena fine bubble air stone at the end of the airline beneath a powerhead? would that be like noisy due to the bubbles being churned up and broken by the impeller? it sounds good to just put it beneath a circulation piece, filter or water pump, but the tank is at the foot of my bed and so noise is kinda an issue!
those are the ideas circulating in my head at the moment. certainly, the fancy double membrane is attractive as it looks like a solution, but the red sea looks good as well. either way, from what i ahve gathered online, the use of a circulation pump in the form of a filter or powerhead is more effective at spreading the co2 throughout the tanks versus the conventional methods. thats why i am leaning towards the powerhead and membrane equipment over the popular hagen ladder. lastly, are there any diy delivery ssytems that i am not aware of? i know of rex grigg's delivery system of course, but lack the tools to build such a piece.