Weird growth on the back wall, need help to ID this

[pedroampuc]

Hello,

I have a 3-month-old Fluval flex sea 32.5. Everything was going well, parameter, per API test kit, were all 0ppm (ammonia, nitrate, nitrite). However this last 2 weeks I noticed a growth on my back wall that I have not seen before, and could not find similar images here on this thread. Hopefully, someone can help me identify this "thing". Images of my tank are below:

 

[BaysEndReef]

It almost looks like a hydroid encrusted on your tank. Weird. Never seen anything like it.

 

[pedroampuc]

It almost looks like a hydroid encrusted on your tank. Weird. Never seen anything like it.

Thank you for your reply. I've googled hydroid they seem to be a type of predator, maybe they've come with my live sand? I have tons of small pods all over my tank and substrate, maybe they are a response to that population? Tomorrow I will be doing a water change, and I'm thinking about scrapping this from my wall... However, I'm scared about the consequences of doing so, like spreading all over my aquarium.

 

[ScottB]

If you follow the school of "if in doubt take it out" then you can do this.

a) turn off all circulation
b) get a clean razor blade
c) start a syphon hose into bucket
d) scrap and suck at the same time

Odds are it is harmless, but it won't hurt to remove it.

 

[pedroampuc]

UPDATE: Just made the manual removal of the weird growth, and a 15% water change. I'm hoping for the best, I'll keep you up to date. Thanks!