so wat do i do? im thinking a water change before putting a small bichir in? hopefully. but ima like put a feeder in there see if it survives in like 5 hours. otherwise.........bichir time with photos?
Don't waste your time trying to find a suitable dither testing every fish you can find. Silver dollars will work there better than the Congos and giant danios.
Spotted silver dollars will work fine. Test for ammonia, nitrites and nitrates. If the first two are zero and nitrates no higher than 40, it should be fine otherwise keep monitoring the water parameters. Read this manual. http://www.aquariacentral.com/forums/showthread.php?t=84598