edress714 September 2, 2014 Share September 2, 2014 It's only on this rock (of course I got it from Petco) Link to comment Share on other sites More sharing options...
surf&turf September 2, 2014 Share September 2, 2014 Are you referring to the white stuff? Link to comment Share on other sites More sharing options...
Squishie89 September 2, 2014 Share September 2, 2014 Looks like baby sponges Link to comment Share on other sites More sharing options...
surf&turf September 2, 2014 Share September 2, 2014 Looks like baby sponges +1 Link to comment Share on other sites More sharing options...
edress714 September 3, 2014 Author Share September 3, 2014 Are they bad for the tank? (No clue what they are) Link to comment Share on other sites More sharing options...
Squishie89 September 3, 2014 Share September 3, 2014 If they are sponges, no not at all. Sponges are filter feeders. Some times they can grow places you don't want them (like on zoas) but other wise harmless. Link to comment Share on other sites More sharing options...
DuffyGeos September 3, 2014 Share September 3, 2014 Are they bad for the tank? (No clue what they are) No they are good...if they live. Some fish will also eat them. Link to comment Share on other sites More sharing options...
edress714 September 3, 2014 Author Share September 3, 2014 Ok thanks, well my zoa is on this rock lol Link to comment Share on other sites More sharing options...
YHSublime September 3, 2014 Share September 3, 2014 You shouldn't worry yet. I have sponges that I don't care for growing on my frag racks. Unfortunately, I think the fish that will eat them are the same fish that would enjoy my zoas just as much! Don't stress it, unless they look like they are getting out of control. Link to comment Share on other sites More sharing options...
davelin315 September 3, 2014 Share September 3, 2014 If they are hard, could also be a foraminiferen. Looks more like a sponge, though. Link to comment Share on other sites More sharing options...
SurlyT September 3, 2014 Share September 3, 2014 I agree that sponges are harmless in terms of affecting other animals, but some of them can be surprisingly invasive. I had a type of black finger sponge that grew everywhere in my tank and was tough to keep under control. But yours looks nothing like that, so I see no reason to worry about it. Link to comment Share on other sites More sharing options...
Origami September 17, 2014 Share September 17, 2014 Some sponges can be invasive. (Some that I've seen were white/gray that would spread with little finger-like projections.) I'd just watch it and see if it becomes a problem. Looks pretty benign right now. Link to comment Share on other sites More sharing options...
thakki September 19, 2014 Share September 19, 2014 I recently started seeing them in my tank too. They seem like spreading faster...will it be okay to brush them off? Link to comment Share on other sites More sharing options...
Origami September 19, 2014 Share September 19, 2014 I recently started seeing them in my tank too. They seem like spreading faster...will it be okay to brush them off? If you're trying to remove them, then remove as much as you can first from the tank. That's probably the best way. Some can be easy to remove using a pair of tweezers first, and then (as you say) brushing off the residual. Link to comment Share on other sites More sharing options...
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