Rotifers

[Chad]

Sounds like you did everything right. I have had my cultures crash for no apparent reason but its usualy something I had forgotten, like did not feed or the 50/50 was off or not topping off evap.

The clearing of the water just means that they are eating. If you have a decent culture the water will be clear in a matter of hours.

Some people also say that if you clean out the bottles too well it can cause a crash. But I have never experienced that problem.