What is this?

[cait.evers]

So I’ve been trying to figure out what this is and I can’t figure it out! It just started growing in my tank one day and now it’s huge. I thought it was soft but it’s hard! Anyone know what it is?

 

[JosephM]

Very very odd. You got a lot of stuff growing in that tank! Here’s a bump for you. Upon a glance I’d guess sponge or tunicate but they’re not hard

 

[cait.evers]

Very very odd. You got a lot of stuff growing in that tank! Here’s a bump for you. Upon a glance I’d guess sponge or tunicate but they’re not hard

I’ve been thinking about trying to remove it but I also don’t want it to spend. But i’ll still try to figure out what it is first!