hello, i built my own 30 gallon aquarium mostly for a better space for my betta and 4 guppies which i've had from fry to live, and i am planning on making it a community tank, i was thinking of adding
-4 ghost shrimp
-4 tetras or platties (unsure of which or what kind yet)
-2 ottos
would this be a good combination with my guppies and betta?
and comments, advice, or suggestions are welcome!

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30 gallon, self build
-1 male 3 female fancy guppies
-6 neon tetras
-3 oto
-1 male betta
-3 julie cory cats

Tetras would be better as they are faster than the betta.Platies are brighter and may be a target.Same with the guppies,the betta may decide he wants to turn on them as they have long flowey colorful fins.the ghost shrimp will also become a potential snack for the betta.

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http://bountifulbettas.blogspot.com/

"Come to the dark side....we have cookies...and filters/heaters/and water changes!"

Im guessing you already have the guppies with the betta? If thats the case then thats no problem.

I would suggest tetras over platies as well. Shrimp is a hit and miss with everyone with bettas, they will see them as a tasty snack or they might ignore them

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"Just Keep Swimming Just Keep Swimming Swimming Swimming"

Thanks for the advice, this is what I ended up deciding on.

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30 gallon, self build
-1 male 3 female fancy guppies
-6 neon tetras
-3 oto
-1 male betta
-3 julie cory cats

Thats a decent selection, watch your guppies multiply ten fold over the next few months though as they breed like mad

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"Just Keep Swimming Just Keep Swimming Swimming Swimming"

if its a male betta put it in its own tank it will kill the others