has anyone ever cemented live rock together

[LOTUS50GOD]

Has any one ever cemented (with mortor mix or portland cement) live rock together. I want to make some arches in the tank. I would do it over a year, so not to loose too much of the good stuff on the rock.

[LOTUS50GOD]

bump???
is there anything bad in portland cement???

[torque66]

bump

[reef_freak_hou]

torque -

Check out http://garf.org under their how to section.

They make rocks, caves, arches etc and tell you the process.

I think it may be what you are looking for.

[Mackrill]

You might run into some issues trying to keep the live rock alive while you cure the cement. I understand that it takes weeks to get the cement cured enough to use in a tank.

Others have used plastic coat hangers and epoxy to bind live rock together to make arches. Drill holes with a masonry bit, stick plastic hanger in hole with some epoxy to make it stick, stick other rock on. Kind of like a dowel joint.

[Reefmedic79]

I hear some cement leaches out phosphates. Hear an Idea I've been playing with. Drill 1 inch holes throught the large pieces of LR and then place a 1" PVC PIPE throught them. That way they will have a center support for the rocks and such.

[Bryan]

Use a product called thorite. It's a cement that is applied underwater, however it works much better when it's applied out of the water and allowed to cure, about 24 hours.

[peacetypes6]

i use silicone

Robert

[yarsrevenge]

yeah, the curing thing with Portland type I&II....I have some cool aragocrete *still* curing from early fall (pH is still over 10.0)!!! I to be honest only empty the 5 gallon containers and re-fill with water bi-weekly so the process could be hastened with a daily change (PITA!).