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This is not a frag anymore its grown on the rockwork alreadyPull the frag and gently peel it off. It's like rubber so carefully tweezers and peel and pull. You may have to do several times.
Angelfish eat sponges, but I seriously doubt you will get rid of this spopnge by introducing any fish or invertebrates.This is not a frag anymore its grown on the rockwork already
So thats why i wanted to know what fish, snail or invertbrate will consume this kinda sponge
Just to put this out there - the problem with using biological controls (i.e. something that eats it) with sponges is that there are a ton of different sponges, some of which look indistinguishable from others. Some of these sponges are inedible or extremely undesirable foods to some species (either because of chemical defenses* or just because of taste preferences) while being highly desirable to other species. So, even if you pull in a known sponge-eating species of fish/starfish/whatever, there's no guarantee it will eat the sponge you want it to eat. Also, many of these sponge-eating species eat other things (like coral) that you might not want them eating.
Long story short, manual removal is probably your best option for sponges until more study has been on both specific sponges and specific sponge-eaters, but you can try it if you want.
*Just as a note on the chemical defenses of sponges, many sponges produce chemicals to avoid being eaten. Some of these chemicals are more generalized, some of them are specifically anti-fish, some are specifically anti-echinoderm (starfish, urchin, etc.), etc. So, again, some things might eat one sponge but not another, and because of the whole indistinguishable thing mentioned above, the sponges that are and are not being eaten may look pretty much identical (some may be distinguished/ID'ed under microscopic investigation, others may need to be DNA tested to be distinguished/ID'ed).
Just my two cents here.
The best way I've heard to control sponge growth at this point is to use a steel straw to scrape and siphon out the sponge you want to remove. Sometimes you can create bad conditions for them and kill them off that way, but that's typically much harder and not always effective.
Some other sponge removal methods:
Other suggestions include exposing the sponge to air (obviously not a guaranteed solution, and definitely not viable for this situation); hydrogen peroxide dipping the sponge (again, not viable here); injecting the sponge with hydrogen peroxide, vinegar, boiling water, or air; microbubbles in the display; and a few more. Predation is not usually a good solution for this issue, and I explain why below: