Limestone with fossils in the Aquarium

7 Apr

To keep the pH of the aquarium at 8.0 or above, I use the limestone rocks that we have in abundance right here in Iowa.
In particular, this is great for African Cichlids (specifically the Rift Lake Cichlids of Malawi and Tanganyika) and for Saltwater fish.
A recent post by Aditix, a WordPress bogger, explains this subject quite well.
Here is a link to that post:

I took a few pictures of the limestone rocks that are found around here, along rivers, or rockcuts from highway construction, and you can see the fossils in these rocks. There are shells and tubeworms, and coral formations that look like corals that are growing today. These fossils are from the Devonian Period, around 400 million years ago!

A friend of mine set up a Saltwater  “Nemo” tank for his little girls. The fish died and we discussed it but I never guessed what the problem was. He took a water sample to a Local Fish Shop and they found his tank had a low pH for Saltwater. I told him about using the limestone. Next thing you know, he was out walking around picking up limestone pieces. He cleaned them up and put them in his tank. The pH is correct and stable and his new fish are doing fine.
Of course, there are substrates like Oyster shell, crushed coral and Dolomite that accomplish this as well.


2 Responses to “Limestone with fossils in the Aquarium”

  1. Aditix April 9, 2012 at 2:25 am #

    Your fossil limestones here look great, interesting and decorative. I like the top one best.

    • fishtanx2011 April 9, 2012 at 4:06 pm #

      Those fossil corals look great don’t they? The one that has me most curious is the larger piece on the bottom photo. I am guessing it’s a bunch of large tubeworms but I would like to know for sure. Any fossil experts out there?

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