Looking for recommendations for beginner coral for a friend

[Perpetual Novice]

My friend has been running a 20 gallon tank for about 6 months now. After moving too fast and crashing his tank already he has asked for my advice to slowly restock his tank. It has been 3 months since the crash and he has since added a cleanup crew and 3 small fish. His nitrates aren’t perfect and he does a water change whenever they reach about 20 ppm. His lights are strong enough to support most coral.

he is interested in adding some coral that will accept his dirty water. I recommended ricordia shrooms toadstool zoas and xenia so far.

i was wondering if rock flower nems would also be a good recommendation. They have always been extremely tough in my experience.

Also any other suggestions that anyone can think of would be great to hear

thanks!

 

[Perpetual Novice]

There’s an exceptionally good opportunity for him to snag some rock flower anemones that expires tomorrow so I’m especially curious about opinions on those.

 

[Reefer40b]

Rock flowers would probably be fine