I recently got 6 hillstream loaches which i suspect are Beaufortia kweichowensis for my 29 but i'm a little worried my tank setup is lacking for these fish. i've got a few live plants, a few rocks (planning to add more cobblestone) a powerhead , airstone, AQ-70 filter. the powerhead is on one side of the tank at the bottom and the AQ is on the other side to create a roughly circular flow of water. the airstone is right in front of the powerhead and so are most of the rocks and a piece of Driftwood. I know that they prefer cold, fast water (the tank is at 68-70 F but i'm worried that i cannot provide absolutely uniform flow direction. Also a little confused since they are moving around and scuffling much more then they were in the dealer tank, where they more or less stayed still until the net came in, little worried that the are asphyxiating. They always dart in and out of the bubble flow so i'm a little concerned, i had a hillstream loach (sold as a lizard fish) before when i was completely new to fishkeeping and did no research and i'm hoping not to repeat that fiasco. any other tips to keep these fish?