Adam Posted November 27, 2003 Share Posted November 27, 2003 I'm looking to replicate the Rio Tapajós, Pará, Brazil biotype but am having trouble finding information on water chemistry, sediment, etc on this clearwater system. Can anyone help me?Adam Link to comment Share on other sites More sharing options...
[-fireStorm-] Posted November 27, 2003 Share Posted November 27, 2003 From my understanding the Rio tapajos system is similar to the Xingu system: Both these rivers are on a rocky plateau, near the mouth of the Amazon and are basically made up of this: clearwater, strong current, rocky, pebbly etc. There are no leachable materials so the water is VERY clear. The parameters are similar to this: ph : 7.2General hardness (GH) : 4.9 dhCarbonate hardness (kh) : 4.7 dhConductivity : 142 microSiemensSo if you wanted to replicate this in an aquarium, it would be a fine gravel mixed with a larger gravel substrate. Try and make both types of gravel similar colours, it looks more natural. And the plain white gravel sold in a-lot of aquarium shops looks unnatural (yuck!). Lots of pebbles, a few larger rocks...try to make these a similar colour too. Prehaps discreetly hide a few plastic pipes in the gravel or under the rocks as shelter for the fish. Most of the fish from this type of habitat live in rocky holes and crevices. I have a-bit more info around somewhere, i'll try and find it...-Shaun Link to comment Share on other sites More sharing options...
Link2Hell Posted November 27, 2003 Share Posted November 27, 2003 My reference comes from "Sth American Eartheaters" and describes the biotope as sand substrate with large round rocks that is inundated with accumulations of woodAt the hight of the wet season water can rise 12 metres and flood the forestThere are no permanently submerged plants due to the turbidity of the waterCurrent is usually only moderate with pH in the range of 6.0-6.5 with negligible hardness <4dGH and conductivity of 50 µS/cmMid year water temp is 28*C and can rise 10*C during summerHTH L2H Link to comment Share on other sites More sharing options...
[-fireStorm-] Posted November 27, 2003 Share Posted November 27, 2003 Yeah, mine should say moderate current, rather then strong. For an aquarium system based on this habitat you will need excellent mechanical and biological filtration and really good aeration. Very clean, well aerated water.-Shaun Link to comment Share on other sites More sharing options...
Adam Posted November 29, 2003 Author Share Posted November 29, 2003 Hi guys,Thanks for your replies. That gelled with the information I had and have since been able to find.Adam Link to comment Share on other sites More sharing options...
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