Not at all, a established tank is best but i started the straight 5" frag low in my tank in the back for three weeks. everyone else who bought pieces theirs have died:rip:. The larger one i placed mid in my tank from the start then moved the 5" frag out to the left. both are feeding all day (more at night) and growing. I have a variety of corals in my tank (more towards sps/lps) but their doing very well.
I put it in the back at first just ensure acclamations from led to T5 was accepted and I have a strong current tank and the tank it came from wasn't. Now it's mid level and receiving heavy flow. And I have person first for a frag and then you for sure.