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Pet Forum / Aquaria / General / August 2004A question about rocks in the aquarium
Hello, This is maybe a bit of a newbie question, but I have a tank set up with a few rocks in it, the rocks coming from my garden (scrubbed clean, rinsed, and sterilised in a hot oven - couldnt think of any better way to do it!). I have noticed a couple of fish have just keeled over and died. Now I have checked the usual water parameters and nothing untoward there, pH, temp, nitrate/ites etc. And these fish dont seem to be bothering each other. Also, I have not noticed any obvious other signs of ill being (white spot, fungus etc), or odd behaviour. So my feeling is that maybe the rocks are doing something to the fish (which, btw, are a group of various Malawi cichlids) which they dont like. I am not a trained geologist, but the stones do not appear to have any metalic ores running through, they all seem to be of the igneous/metamorphic variety (no porous sedimentaries). Can anyone give me a hint as to what might be happening? Thanks in advance, Adam Savage > Hello, > This is maybe a bit of a newbie question, but I have a tank set up with [quoted text clipped - 19 lines] > > Can anyone give me a hint as to what might be happening? It's not a good idea to use rocks that you don't know what they are. OTOH most rocks are pretty harmless. The major reason for not using unknown rock is that it might harden the water - this is unlikely to be a problem with Rift Cichlids. If they are local to rocks, then indicating where you are might give an indication of what they could be. Roger Sleet Roger's Aquatic Pages http://www.sleet.plus.com Ok, thanks for that. I live in Perth, so a lot of the rocks are glacial debris, i.e. could be from anywhere. But they do look mostly like gritstone/gneiss/general rocky rocks! Cheers so far. Adam S > > Hello, > > This is maybe a bit of a newbie question, but I have a tank set up with [quoted text clipped - 28 lines] > Roger Sleet > Roger's Aquatic Pages http://www.sleet.plus.com > Ok, thanks for that. I live in Perth, so a lot of the rocks are glacial > debris, i.e. could be from anywhere. But they do look mostly like > gritstone/gneiss/general rocky rocks! Well Gritstone should be OK as should Gneiss be if there is no mineralisation. It is a bit harder to be certain with General Rocky Rocks :-) Roger Sleet Roger's Aquatic Pages http://www.sleet.plus.com Heh heh, thanks! Thing is, I cant ID the other rocks, and they just look like, well, rocks! Without any obvious mineralisation, and without being very porous. Sort of a smooth greyish rocky colour. Definitely not granite/slate though..... Either way, the problem seems to have solved itself as all the little fishies appear to be living in harmony now....Well as much harmony as a few cichlids can manage! Adam S > > Ok, thanks for that. I live in Perth, so a lot of the rocks are glacial > > debris, i.e. could be from anywhere. But they do look mostly like [quoted text clipped - 6 lines] > Roger Sleet > Roger's Aquatic Pages http://www.sleet.plus.com they is a section of suitable rocks for the aquarium by a geoligest on www.fishcrazy.co.uk > > Hello, > > This is maybe a bit of a newbie question, but I have a tank set up with [quoted text clipped - 28 lines] > Roger Sleet > Roger's Aquatic Pages http://www.sleet.plus.com Cheers! Will check it out, Adam S > they is a section of suitable rocks for the aquarium by a geoligest on > www.fishcrazy.co.uk [quoted text clipped - 31 lines] > > Roger Sleet > > Roger's Aquatic Pages http://www.sleet.plus.com |
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