How to secure cement rocks underwater???

[Adriana84]

Im working on a huge aquarium and we have to secure some cement rocks on the bottom. what is the best way to seal them or secure them??please help me..

 

[bimr]

How big an aquarium are you building? What is the aquarium constructed of? What are the "cement" rocks made from? Shouldn't the rocks sink in water?

 

[itsmoked]

Does this aquarium have water in it already?

Keith Cress
kcress -

http://www.flaminsystems.com

 

[dicksewerrat]

Concrete rocks would sink in water. Are these 'rocks' going to be painted or stained? I would use concrete anchors installed in the 'rock' and place a 2 inch layer of concrete on the floor of the tank. Other that that, what do you think could move these 'rocks'?

Richard A. Cornelius, P.E.

http://WWW.amlinereast.com

 

[Ussuri]

Big Fish

 

[Zambo]

Maybe the "cement rocks" are the bottom. I would guess the aquarium has a concrete base slab and then a curved wall and roof system to make an enclosed water retaining glass tank.

I've visited a couple of huge aquariums (or is that aquaria)that you can walk through with fish either side and above. Drowning always seems a possibility.