vinceandrobyn Posted November 14, 2014 Report Share Posted November 14, 2014 We would like to keep rainbows in a community tank, sounds like they are peaceful fish. We found a website that lists the parameters they prefer as far as ph, temp etc go and it appears they like much harder water then most fish (9-19kh). My question is how important is water hardness? Also what fish could be put in with rainbows? Quote Link to comment Share on other sites More sharing options...
Adrienne Posted November 15, 2014 Report Share Posted November 15, 2014 I used to keep rainbows and my water is soft. They grew well, swam well and were healthy. They need a big tank - over 150cm as they get to be big fish. Open swimming spaces are required and a decent fitting lid. As they are very active keep with other fish of a similar nature. I had mine with X-ray tetra, bristle nose, a rainbow shark, SAE and dwarf chain loaches. Quote Link to comment Share on other sites More sharing options...
vinceandrobyn Posted November 15, 2014 Author Report Share Posted November 15, 2014 Our tank is 390L 105cm long. Not sure of hardness as havent got a test kit yet (any recommendations), but it is rainwater from roof, stored in a concrete underground tank. Quote Link to comment Share on other sites More sharing options...
Adrienne Posted November 15, 2014 Report Share Posted November 15, 2014 kH kits that are current (not past expiry) are not easy to come by atm. I spent heaps on a salifert one to find out four weeks later it was expired and giving a false reading. I'm currently using an API kit (I ended up picking it up in Australia a few weeks back). Quote Link to comment Share on other sites More sharing options...
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