"Denise" wrote in message
...
I have a planted 10G with 4 otos and they're doing well. My GH runs
150-300
and pH is between 7.2 & 7.8. I haven't been able to get a more accurate
reading. My other fishes are platies, danios & a marbled hatchet plus some
ghost shrimp. Hope that helps.

Thanks Denise,

Are they zebra otos or the more usual kind? I'm not sure how much
difference it makes with requirements of the two types but get the
impression that zebra otos might be more fussy.

-- Lisa