Reef safe mortar for attaching large rocks?

[iSeeMax101]

Anything at HomeDepot that we can use?
Only thing I was planning on is Emaco but need to order online
And only comes in a 50lb bag. Would like to tackle this project this weekend if I can find something else that might work just as good.

 

[mannyhernz]

Aquaforest has the same type of bonding cement as emarco. Ive heard that hydraulic cement from HD works too

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[iSeeMax101]

I’ve been reading that the hydronic starts to crumble after 6 months

 

[Joe Kelley]

pure portland cement works great, needs to soak in fresh water for a day after it cures IME or ph will spike.

 

[CRookSkee]

Quickrite from HD, i have some left if you need some for free, you just have to pick it up in 90280 Southgate

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[iSeeMax101]

Any cure time needed for the Quikrete?

 

[CRookSkee]

Any cure time needed for the Quikrete?

hmm i dont remember but it starts getting hard pretty quickly. i think i let mine dry completly for like 2 days.

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[Djbeasley05]

Quickrite from HD, i have some left if you need some for free, you just have to pick it up in 90280 Southgate

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


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[CRookSkee]

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


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really ? mine on my 45g reef is still holding strong. maybe you didnt let it cure long enough idk but mine is still rock solidz.

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[Djbeasley05]

really ? mine on my 45g reef is still holding strong. maybe you didnt let it cure long enough idk but mine is still rock solidz.

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I might have to try it again. It makes sense that it should work.


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[CRookSkee]

anyone want some i have some for free just hmu to pick up

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[iSeeMax101]

Has anyone used this and not experienced any deconstruction past 6-8 months?
What was your cure process?

 

[mannyhernz]

Quickrite from HD, i have some left if you need some for free, you just have to pick it up in 90280 Southgate

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This is the hydraulic cement i was referring to.

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[CNGH]

I was looking at the same thing but the search thru the threads on this forum scared me away. Quite a few people saying it worked great for up to a year or more and then it started to crumble. I didn't want to take that risk, especially if you have an overhang or something that'll fall over.

I'm gonna go with a combo of acrylic rods, epoxy and thermo plastics. Between all of that I should be good. Fingers crossed.

 

[vuqchu]

It does crumble. Don’t use it. You’re fine using spec mix or even tile grout mix if you want the lighter color looking cement. I’ve used both with no issues.

 

[Dhoggs]

I used the exact same cement and no issues thus far. My tank has been up and running for 8mos now


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[iSeeMax101]

I have a fairly large shelf I’m looking to mount. I definitely don’t want it falling some 12 months later. What would I be able to use that might stand the test of Time? There will be some good pressure on that joint so need something strong.

 

[pga7602]

I have a fairly large shelf I'm looking to mount. I definitely don't want it falling some 12 months later. What would I be able to use that might stand the test of Time? There will be some good pressure on that joint so need something strong.

Well... then... I think you might want to look into drilling a few holes and using acrylic rods then use emarco to join it all together. BRS has a good vid on the different options including acrylic rods.

 

[pga7602]

It does crumble. Don't use it. You're fine using spec mix or even tile grout mix if you want the lighter color looking cement. I've used both with no issues.

I used spec mix in my pond and that stuff will never crumble! The tile grout mix is very interesting! Makes total sense too.. I might have to try this for frag disk

 

[sandyland]

I used jb weld, water weld (two part putty). Super strong.
It's been three years and no problems

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