Reef safe mortar for attaching large rocks?

[five.five-six]

I used this on a freshwater tank and it fell apart and started dissolving after a couple of months...


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Freshwater tanks are usaly acidic. Cichlids tanks being the notable exception.

 

[iSeeMax101]

I’m scared to drill and have the rock damaged. There really isn’t a good place to run any rods as the mounting point is probably about 3-4” across. It’s tricky. All livestock is coming out for TTM and then a 8 week QT so this will give me time to have the rocks out and arrange things before they go back

 

[iSeeMax101]

Which spec mix exactly? When I google it there are a ton of different options. Any should be fine?

 

[vuqchu]

Which spec mix exactly? When I google it there are a ton of different options. Any should be fine?

https://www.homedepot.com/p/Spec-Mix-60-lb-Type-S-Masonry-Mortar-0179560000/100317716

 

[iSeeMax101]

Hey thanks Vuqchu! Any cure time needed before adding back to tank to prevent ph spike or anything?

 

[vuqchu]

Should be good with soaking in freshwater for few days and let it dry out completely before putting in the tank

 

[Dhoggs]

Below is my aquascape..as you can see, i have multiple shelf rocks cemented to the base rocks. My entire aquascape contains 4 sections consisting of several smaller pieces cemented together.

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[gotboostedvr6]

Any updates from guys using mortar?

 

[gotboostedvr6]

Bueller

 

[gotboostedvr6]

Mortar mortar?

 

[pga7602]

Mortar mortar?

Not home depot, but the marcos cement has been going for almost 2 years and it's still solid as a rock. Nothing leaching as all fish and even sps were going strong until I tore down the aquascape to make a new one.

 

[wishntoboutside]

Aquaforest Stone Fix. will do a good job for one as well.

 

[BeanMachine]

The key with using the mortars is to mix a little at a time. Like enough for just one or two joints at a time. You'll be messing with a piece of rock, then you'll turn back around and your bucket will be dry. Been there done that.