would this do anything?

[shockshockshad]

I am getting a red eye puffer tank, and i was going to have a pair and 2-3 otos in a 10 gallon, but my mom said maybe we could get a 15 gallon. Could I get any more fish?

[gm72]

I believe the 15 gallon is the same footprint as the 10 gallon, so I would guess no to more fish but a resounding yes to better water quality!

[~Erik3.8.07~]

i think the next size difference is a 20 but i think that only adds 4 more inches to the length

[Tolley]

i'd go for it... bigger is better!

[Dave66]

I am getting a red eye puffer tank, and i was going to have a pair and 2-3 otos in a 10 gallon, but my mom said maybe we could get a 15 gallon. Could I get any more fish?

Red-eye puffers yes, with Otocinclus, no. The puffers will eventually (or immediately) kill the Otocinclus. Puffers need to be kept alone, as they will taste any tankmate you put in with them. With their little sharp beaks tasting is usually fatal to tankmates. A puffer tank is a great place to get rid of unwanted snails; they adore them.
And more is better as to tank size, so push for the 15 unless you see a 29 for a good price . . .

Dave

[cocoa_pleco]

if you could get a 20g long that would be the best but if not a 15g is better than a 10g