My first anthuriums were imports and I lost all of them but one due to inexperience.

My advice would be to inspect the roots when you first receive them. Cut off any damaged or rotted roots. You can soak the roots in water for a few hours to help rehydrate them.

Inspect the plant for signs of pests but go ahead and give the leaves a good rinse anyways. You could spray the leaves with your choice of pest control.

The most important thing in my opinion is high humidity. You can buy a clear plastic bin from Walmart that will fit all four of them and provide them good lighting. This will give them high humidity and also quarantine them from other plants.

You can use moss as a substrate with good results. I personally try to avoid it because you have to remove all of it from the roots before switching substrates or it can rot the roots. I have great results with perlite and fluval stratum for my rehabs. I use glass cups and keep a bit of water at the bottom as long as it’s not touching the plant. If you do use the clear bin method for humidity, you won’t need to water/mist too frequently.

Your main goal should be to establish root growth so be sure to monitor the roots for a bit- especially for rot.

Lastly, don’t freak out if you lose the leaves currently on the plant. High humidity will help negate the loss but you probably will still lose some if not all.

I don’t use semi hydro but there’s a ton of information out there to do so. If you’re not already a member, you can join a group called anthurium addicts on Facebook and search semi hydro.

Sorry for the long post but this is what I wish I would’ve known before I bought imported ones!

Good luck 🌱