Anthurium regale can grow leaves close to 1 metre long. In fact, in the wild the leaves have been known to grow to 2 metres.
Our best advise is to keep humidity high and temperatures about 20 degrees. A well draining potting mix containing lots of bark, perlite and some sphagnum moss.
This has very large roots and is 100% healthy. There is some damage to the tips of leaves however this is purely cosmetic. We have reduced the plant in price to allow for this minor damage.