Why even use Airstones? (statement-question combo)

JohnnySocko

Active Member
Newb here, but...

I recall long ago visiting a aquarist with hundreds of fish tanks and not one had a airstone...and he said airstone cause unnecessary back-pressure vs. the added benefit of breaking air into smaller bubbles for more efficient gas exchange...basically the marginal benefit didn't justify the added power consumption...

...this was 20-30yrs ago, and anymore, most serious fish-rooms have dispensed with them; pump diaphragms & power is just too costly ...and yes the fish & plant root analogy is justified since we are needing dissolved O2 here
....and granted, I've not seen any "scientific" comparison done with O2 levels in water: with/without airstones, but after loosing a plant to a clogged stone (and the accompanied ruined airpump diaphragm), I just tossed mine and see zero difference in the plant

(yes I get the reasoning that many smaller/fine bubbles have a greater capacity/opportunity for gas exchange in water, vs fast moving larger bubble, but...)

...I'm thinking the added air volume/water turbulence of a airline MINUS the airstones basicall makes up the the minor difference in O2 levels (NTM the piece of mine that you no longer have to deal with the risk/cost of airstones clogging, buying/replacing/blah blah blah)....
(I'm basically saying just stick a 1/8 rigid tube into the bucket all the way to the bottom and its VERY close in performance to a bucket with some giant airstone at the end)

...just wondering what everyone/anyone thinks
 
The water is mostly aerated, by agitation at the top... to break up the bubbles at the bottom better, try putting a cage around the end of your air hose rather then a stone. A cage won't cause air pressure back up, but will disperse air quite nicely...
 

JohnnySocko

Active Member
The water is mostly aerated, by agitation at the top... to break up the bubbles at the bottom better, try putting a cage around the end of your air hose rather then a stone. A cage won't cause air pressure back up, but will disperse air quite nicely...
your economy of words is appreciated (that's also what I was saying: surface turbulence also/likewise caused O2 exchange)...
got any pics or threads on the cage thing (or is it just window screen around a rigid tube?)
 
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