Dec 16, 2013 #1 watdachuck Valuable Member View Badges My Tank Thread Joined May 21, 2013 Messages 1,028 Reaction score 989 Location Columbus, OH Rating - 0% 0 0 0 Can anyone identify what this white stuff is? It almost looks like cotton, but there is an opening much like a sponge...thanks!
Can anyone identify what this white stuff is? It almost looks like cotton, but there is an opening much like a sponge...thanks!
Dec 17, 2013 #2 Reefing Madness Carbon Doser View Badges Staff member Super Moderator Excellence Award Hospitality Award Joined Oct 27, 2012 Messages 19,879 Reaction score 7,115 Location Peoria, AZ. Rating - 0% 0 0 0 Yea, just sponge growth.