Most sponges that do well in aquaria do not like bright light. So in all likelyhood the sponge will disappear. If psooible try to match lighting conditions the frag grew in. There are a couple photosynthetic species taht do well in bright light and can be an issue for corals. A
black one is very problemtatic as it is very invasive and quickly encrusts corals but it does not loook like you have that one. The others that tolerate bright light I've never had issue with in all the years I've been keeping reef systems. Also, there are a lot of cryptic sponges ubuquitous to reef ssytems and are beneficial recycling the DOC produced by various organisms. You likely already have some growing in your system and it's only the ones that do well in bright light that "might" be an issue. The characterisitc to look for is if they do best around existing corals.
