Sorry, the links on the original post don't seem to be working. Hope this is better:

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Here are a couple more photos:

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Great job! Those trunks are awesome.

Long, lanky growth is most likely due to low light conditions. Does it sit in
that location all day?

That said, even if the plant is outside in proper light, the growth will still be very
long! The only difference is that it will shoot straight up instead of outward.

The only way to rein these guys in is to prune them. I would prefer to prune them
earlier in the summer, but it probably won't hurt now. (I know folks who prune their
Money Trees in December).

Pruning can only do so much, however. Unless the light is improved, the new branches
will continue to exhibit floppy, sidewise growth.

Josh

Thanks for the reply, Josh.

I didn't know that lankiness could come from lower light. Thanks for the information. Of course it makes sense now I think about it.

The plant has been closer to the window than in the photo, but the curtains have been shut a lot of the time since May/June to keep the room cooler (it gets up over 40C/100F inside in summer) - so yes, the light has been really dim during the warmer months when it has been growing fastest.

After summer, once the weather cools down I keep the curtains open more often, so would it be best to wait until after summer to prune them?

Thanks.

Sure, my pleasure.

Lankiness from lower light is called 'etoliation,' just to put a name on the symptom.

Actually, we've missed the optimal pruning window for this year.
It's best to prune plants in the month prior to the period of most robust growth.
For Pachira, that would usually be May - June. You can prune whenever you'd like,
but be aware that it's not optimal timing.

Josh

Thanks again Josh, much appreciated.