Lynne, they are not suitable as pond plants....need excellent drainage.
Also, there is no such thing as a true 'house plant' because there is no plant whose native habitat is in a house.
What you need to do is imitate the plants native habitat as closely as possible and THEN you will get blooms.
BOPs like full sun to half a day of sun. Best half of the day is in the afternoon. (strongest sun)
So when the weather warms up a bit, bring your BOP outside and for the first few weeks, give it dappled sun,
then gradually give it more and more sun.
http://www.helium.com/items/1461892-houseplants-how-to-care-for-bird-of-paradiseWhen I lived in NC, my BOPs were in full hot sun all day and bloomed like crazy.
Cuz in their native habitat...they get full sun and no one moves them into the shade when it gets hot.
When you are in Florida you can find them planted in parking lot strip gardens getting absolutely no shade in the hottest dryest conditions,
blooming their heads off.