o2 deficiency why???

[FishyMatty]

I HATE AIR STONES!!!! They are so ugly and kill all my precious co2.

 

[J double R]

with my DIY co2, i once crashed all but a single fish in my 29g.. ive since started aerating at night, and everything is well.. plants grow the same as before, and in the morning, the fish aren't gasping at the surface.

it's worth a try, and less wasteful for you matt, since you're pressurized and i'm not..