rocks

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rocks

Postby paulinpefkos » Wed Feb 18, 2015 1:58 pm

I have just bought a 500 litre complete set up which was a marine setup. I am setting it up as a cold water tank. My question is whether it will be OK to use the rocks which came with the tank in my setup. I have jet washed them to remove the algae and dirt and they have been soaking in cold water for a week. I assume if the rocks were OK in a marine tank they will be OK in cold water as far as affecting pH is concerned.
Any advice will be gratefully received.
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Re: rocks

Postby Rockfish » Wed Feb 18, 2015 10:01 pm

Hi,

They should be ok - assuming they are calcareous rocks of some sort normally used as 'live rock' in a marine tank then they could buffer up the pH to around 8, but this shouldn't be a problem if your cold water setup is for goldfish or similar. It could actually be a good thing, as it's far more common for people to get problems with the pH dropping into the acidic zone in goldfish tanks, rather than high pH being a problem.
Sean


Remember there's lots of info at The Tropical Tank main site!
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