As I really like fish and keeping plenty in planted tanks, and with high plant density, low surface areas is some tanks, I looked at adding soem night time aeration systems.
Most typical planted tanks generally do not require this, eg, all the sump filter tanks have not needed it(adding it will not hurt however).
Where they are effective:
Non stable tanks
Higher fish loads, large species
Higher feeding routines
Large amounts of mulm formation
Lower surface movements
Small surface area to volume ratio(tall cube tanks).
There's some notion that might suggest the micro bubbles stick to algae and help detach some and detritus from leaves.
I hate air stones and hate them in tanks.
I'd toyed with the idea of adding a solenoid to add O2 or other venturi suction methods that toggle between CO2 and air/)O2 based on the light time.
This cost too much per tank realistically.
But would give more control over O2 levels if you wanted them higher than ambient 100%.
Then add this and finally a small air pump(you do not need a large one- even for a large tank, the air gets blasted as a froth).
This in line version of an aeration system is cheap and effective.
Plug it into a timer.
Set about 30 minutes before and after the lights come on/go out.
so air pump=> air line=> check valve => AM reducing Tee, spliced into Return line.
Virtually no head/flow loss.
Note, for smaller low flow canister filter systems, the AM reducer works fine as a CO2 pseudo venturi.
You can modify it some also by building up some glue, epoxy etc, inside the pipe to create the general internal shape of a mazzei, without going all the way and losing a lot of pressure(trade off is that you do not get much draw, but we do not need much here using CO2).