Need help identifying rock
- Thread starter Sussy
- Start date
Looks like a chunk of limestone… I imagine, worst case, you could acid test it
OP
OP
Sussy
Fish Fanatic
I just did, its fizzing. I dont think its safe
if it's fizzing it is not safe for the aquarium...it would alter the ph
Limestone is fine to use in aquariums that contain fishes that like a pH above 7.0 (swordtails, platies, guppies, mollies, rainbowfish, goldfish, Rift Lake cichlids).
If you have tetras, gouramis, Corydoras, angelfish or other acid water fishes, then don't add it to the tank.
Limestone is made from calcium carbonate and will raise the pH of water. If you have enough limestone in water it can raise the pH to 8.5.
If you have tetras, gouramis, Corydoras, angelfish or other acid water fishes, then don't add it to the tank.
Limestone is made from calcium carbonate and will raise the pH of water. If you have enough limestone in water it can raise the pH to 8.5.
powerdyne6
Fish Crazy
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I agree with the calcareous rock raising the PH, GH and KH but isn’t it when the PH reaches a more alkaline level that PH rise would start to level out?
I wanted to put some Seiryu Stone in my new 75 gallon tank. I took a 5 pound piece of the stone and placed it in a 5 gallon bucket with 2.5 gallons of water in it.
I tested the PH, GH and KH every second day for 2 weeks.
Tap water parameters using the API liquid testers
PH: 7.0
GH: 1 drop
KH: 2 drops
After the 2 weeks with no water changes I had these readings below
PH: 7.4
GH: 3 drops
KH: 4 drops
The PH went from 7 to 7.4 by the 8th day and by day 15 it was still at 7.4 on both PH tests.
In the past I used pretty much all limestone to decorate my African tank
Endlersendlers
Fish Crazy
Yes. There is a limit to how much leaches out and it does reach a point of equilibrium where it stops leaching at the new “natural” pH.
Fishies4Ever
Fishaholic
You could put it in water and see if it stops fizzing and test the water before and after to see how much it may have raised the pH. Really depends on what fish you have and what pH they prefer.
You need two buckets, both filled with the same amount of water. Put the stone in one bucket and leave just water in the other. The second bucket is the control - that shows what the water will do with nothing added. Test both buckets for pH, GH and KH after 7 days. Compare the two sets of readings - if they are not the same, the differences are due to the rock.
CaptainBarnicles
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Yup 
that's definitely a rock
that's definitely a rock
OP
OP
Sussy
Fish Fanatic
I dont think I will use it, even if it is safe I dont have that much room for it. Thanks to everyone for the advice
A rock ? I dunno . Could be anything these days .
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