Reef tunnels and caves....talk and pics

[Mr Cob]

My tunnels are made up of huge PVC tubes that I foamed up and placed rock over...You can see from one side of the tank all the way to the other.

From the right:


From the left:


I also have tubes that stretch across the back of the reef....one has a k3 pointing into it to get flow behind the reef....kind of hard to get a pic of that one though.

Would love to see what everyone else has...

[Europhyllia]

My tunnels and caves are just made with rocks. I got plenty of them though. Probably easiest to see when I didn't have stuff on it yet (see link to my tank evolution thread in my signature)
Everybody loves the caves and tunnels! No reef should be without them

[tzhanks]

It started as a hole just large enough to put my finger in, and when I realized it was hollow I created a cave with a hammer and screwdriver

[Mr Cob]

^That looks great....it will be awesome when the corals fill in around the entrance of it!

[Mr Cob]

More tunnels:

dashes show the path of the tunnel: (k3 pushes water through it)


entrance to same tunnel posted above:


short fat SPS tunnel:


another short large tunnel:


entrance to a large cave:


another cave entrance (this one is very deep and has several exits that all of the fish use frequently...you can see the lawnmower blenny in this one):


black PVC tunnel:



huge cave....especially once you get in:

[hobogato]

great job everyone!

in my tank, rather than have a cave or two, i created an elevated flat level by using some rock as columns and stacking flat rocks on top. this provided a large cave under the entire right stack of rocks. i wanted to do this so i would have plenty of room to put nps corals in the caves and the multiple openings allow the water to flow thru the cave area as well

from the front


from the side

[Mr Cob]

That looks great Ace....even better in person.

It's so hard to show depth in pics.