tbrown3589
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Ok, so I decided to make an Aragocrete frag rack using Portland cement and aragonite sand. It's very small - maybe 3/4 cup of cement and 1 cup of aragonite sand plus a tablespoon of rock salt. I used egg crate for the "frame". My question - I have a 125 gallon tank that's been running for about 9 months now. I have probably close to 25 pounds of Aragocrete rocks that I made several months back and freshwater soaked for about 2 months, watching the pH, and then saltwater soaked for another month. When I added these to my tank, I added them about 4-5 pounds at a time and never noticed any pH or alkalinity spike - I didn't really expect any since the soaks took that out for the most part.
My question: how much of a pH or alkalinity shift should I expect if I don't let this thing soak or soak it for a short period? Again, 125 gallon tank plus sump, 3/4 cup of Portland cement max, probably closer to 1/2 cup.
My question: how much of a pH or alkalinity shift should I expect if I don't let this thing soak or soak it for a short period? Again, 125 gallon tank plus sump, 3/4 cup of Portland cement max, probably closer to 1/2 cup.