I just bought an areca palm today, and I have a few questions.

Can it be kept miniature? The one I have is about a foot tall, and I'd like to keep it as small as possible so that it can stay in my bedroom. What's the smallest reasonable size it can be kept at? Would the roots need to also be trimmed?

I plan to water it with water from my fish tanks, which is full of nitrates by the time my fish get done with it. Does that count as fertilization? Should I use plain water some of the time? Will straight tap water hurt it, or should I leave water out to dechlorinate first?

Should I be more worried about over-watering or under-watering? I don't have much experience with plants, so it's likely going to get one of the two. ^^;

I'd also interested in any tips you have from personal experience or books you think I should read. It's such an adorable plant, and I'm really looking forward to keeping it healthy. =^_^=