Is Rapid set reef safe?

[18oreefer]

Home depot has this product ( http://www.ctscement.com/CementAll.asp )and I was wondering if anyone knows if its reef safe, or if anyone has used it? If not could someone recommend a commonly available reef safe cement? Thanks in advance.

 

[Galantra]

I just recently bought hydralic cement from HD I did some research and it is ok but needs to dry first before adding into the tank. it also

 

[18oreefer]

did you buy this stuff? if not what did you buy. i have been checking it out on there site and this is what is contained in it. Does anyone see any problems?

• Silicon Dioxide [SiO2] 15.40% 7631-86-9 N/A N/A
• Aluminum Oxide [A12O3] 13.74% 1344-28-1 N/A N/A
• Iron Oxide [Fe2O3] 2.38% 1345-25-1 N/A N/A
• Calcium Oxide [CaO] 50.87% 1305-78-8 N/A N/A
• Magnesium Oxide [MgO] 1.26% 1309-48-4 N/A N/A
• Sulfur Trioxide [SO3] 12.52% 7446-11-9 N/A N/A
• Loss on Ignition 2.84% 65997-15-1
• Total Alkalis [As Na2O] 0.56%
• Insoluble Residue 0.78%

 

[jrobbins]

there are a lot of threads on using cement in a tank, most of them involving making fake live rock, but should still answer your question. do a few searches and you can read about it.