steve. steve.
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  • Joined: 3/5/2011 12:26
  • From Nottinghamshire
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  • Posted on: 7/6/2011 12:04
how can I identify Limestone? #1
I am in the process of building a new pond and have been given lots of decent sized plants. The only problem is they float, I cant remember the name of the plants but they are tall and have yellow flowers.

I have weighed the plants down with large stones but now worried it may be limestone which I gather is bad for fish or maybe its sandstone?

Does anyone know how I could identify it?

Maybe when I get home I could post pic's for you guys too look at :D
Fishlady Fishlady
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  • Posted on: 7/6/2011 12:21
Re: how can I identify Limestone? #2
Take a piece and drop vinegar on it. If it starts to fizz and bubble, it's limestone. Another way is to put a small piece in a container of water alongside a container with just water in it. Test the pH after a couple of days. If the one with the rock in is higher, the rock is dissolving an raising pH, so therefore limestone.
steve. steve.
  • Just popping in
  • Just popping in
  • Joined: 3/5/2011 12:26
  • From Nottinghamshire
  • Group: Registered Users Basic Membership
  • Posts: 7
  • Posted on: 7/6/2011 13:53
Re: how can I identify Limestone? #3
Wow genius, I will do the vinegar trick when I get home.

I will also try the water in a glass too

I'll let you know how I get on, thanks