Yes that I can do, my clown has been hosting my goni for months so I put the clown and the goni together in a fish breeder net in my tank.
I'm currently also cycling a 12g with a 10g sump to use as a coral tank, and I came into a really great deal on the coral I wanted, and a rainbow bta was included.
The coral is in the a 29g biocube until the other tank is old enough. My biocube is about a year old, my nitrates are a bit high (I left in the care of my parents while I was on vacation for a few months an, so the water wasn't changed only topped off and they were overfed), I got the nitrates down to 20 before I had to take the bta :/ I added a skimmer a week before I got the nem. The goni and other coral are thriving. I adjusted the flow until she looked the happiest, I have 2 powerheads, one aimed at the goni in the fish net so it gets enough flow, and one where the nem seemed happiest. They are the hydor 425 gph powerheads, I use a Eheim 1000 (250gph) as my pump, and just using the biocube skimmer. I have a dwarf fuzzy lionfish, small cinnamon clown, midas blenny, coral beauty angel, 2 cleaner shrimp, and 2 serpent stars. Its a pretty healthy tank livestock wise, despite the high nitrates. I figured just a few more water changes and they should be back to normal. I do one change a week of 30%.
This is my first saltwater tank. I have a 75g African Cichlid tank and a 55g Discus tank all over a year and thriving and having so many babies I have to sell them.
Any advice on the bta would be amazing! I was impatient before and tried 2 before the tank was old enough, but their mouths were open soon after. Also one a I let a clown tear apart :/ I learned so I really hope it works, especially because it is beautiful. Below is a picture of the anemone up close, and then the second picture is so you can see where the anemone's powerhead is. I changed the picture quality so you could see it easier.