The bj watermelon is a very easy coral to keep. It grows well for me,I'd consider it non delicate. Ive maintained it in high light to low light it will morph accordingly to different parameters.(i.e.- low flow low light will develop eyes further apart orange to pink eyes ,also the skeleton will plate thinner and grow faster if fed once a week ,faster if fed than not.low light low flow.
Any problems I will help with coach if need be.Linaged to jeremy 420 who got the original colony from rick stevens of Your Reef.
I dont check this page much so might want to throw a pm ofr in the forum,thope this helps -steve