HELP ID: What is this green thing in my cousins tank?

WilbyBakedReef

New Member
View Badges
Joined
Feb 4, 2021
Messages
22
Reaction score
19
Location
miami
Hello my cousin 40g breeder is doing great but I noticed these green things. Maybe a sponge of some kind?

2E627A45-C459-4A01-A93E-6D8F7A0F3F81.jpeg 13CBEBC7-5806-4B0B-8C5D-CF6710787E51.jpeg
 
AS
Aquarium Specialty - dry goods & marine livestock
Top Shelf Aquatics

What's the main reason you take on DIY reefing projects?

  • Save Money

    Votes: 12 36.4%
  • You Like To Make Things

    Votes: 11 33.3%
  • Necessity, you want it a certain way

    Votes: 8 24.2%
  • Time, you need it quick

    Votes: 1 3.0%
  • Other (please explain)

    Votes: 1 3.0%
GTA Reef
Top