Back to the topic;
So it has been a couple of weeks since the PURA filter. I have changed it religiously every 2 weeks, and the death rate has fallen to 0 and stayed there. During this time I put my new larvae, just undergoing metamorphosis on the slow system drip, and they have had no post meta deaths.
Granted, these are the larvae that survived 4.5 days with no additional heat (76F degrees) and little artificial light during the power outage. Somehow they learned to hunt/eat in the dark or during the few hours that the batteries held out in my battery-draining-emergency light.( Granted, I probably lost 300 larvae on days 4 and 5 probably to starvation.) They had little exposure to ammonia, so I did not have to put them on system until about day 11. They metamorphosized later than batches I've had where I could heat them to 84. I expect the weaker ones died off in the massive early death piles, and the ones that are left are pretty tough. Still, I am very happy to have no post meta death, and I do give credit to the PURA filter. My system is very simple and small, no protein skimmer, just a 100 micron filter, bioballs in wet/dry configuration and in the sump, and a 40 watt UV just before the water hits the tanks. The PURA may be filtering out some harmful entity. It sure does make the water clear with no traces of yellow at all.
The real test will be a normal hatch with a normal larval period.
Unfortunately I won't be able to do the real test, because I am changing my system to take advantage of a much larger sump (75 gallons vs. the 10 gallons I have now). When I get it finished I will have before and after pictures. It will take me some time, as the school year is starting up and new duties will keep me out of the basement. Later on that.
