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Old 07-05-2011, 04:36 AM   #1
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Crushed coral sand

Is there any problems with buying used crushed corals?

I want to buy 23 pounds of it for $10. There are also snail shells mixed in it. The seller pulled the crushed coral out of his reef tank and rinse well & dried. I'm mainly using the crushed coral to raise the pH of my 29 gallon and its cheaper than aragonite.

What do you guys think?
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Old 07-05-2011, 05:20 AM   #2
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Nevermind, I found my answer. Its better to buy new crushed corals.
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Old 07-05-2011, 07:45 AM   #3
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FYI, it will not raise your pH unless your talking about using it in a freshwater tank. Calcium carbonate (crushed coral) will not start to dissolve until the pH gets down to about 7.3 or lower.

I would suggest not using crushed coral at all and use aragonite sand.
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Old 07-05-2011, 10:20 PM   #4
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yep, for the same reason the other guy took it out of his tank- detritus (uneaten food and fish poop) get's trapped between the grains and if you aren't the type to vacuum it regularly, it will spoil the tank. IMO/IME stick with smaller grains.
raise the ph by better gas exchange. aim a power head towards the surface to create some turbulence.
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