Yes, I maintain that a healthy fish will not be killed by the filter. In the 1 week old betta example - there's no way for you to know that the fish that were sucked up were healthy. Too, one could easily argue that such a loss would be a result of user error - obviously not a good choice for filtration for the application.
You are welcome to argue that healthy fish are killed by filters if you like. I'm not sure how many examples of such "Healthy" fish being killed by the filter you can come up with, but for every one I am sure there are countless examples of healthy (and sick) fish that manage to not be killed by the filter.
So the week old fry were shredded into little pieces...even smaller than their whole selves, and these tiny pieces of tiny fish were too big to get sucked through the strainer. Okay. So skip the filter. I though NPTs weren't supposed to have filters anyway. Or is that just walstad tanks?
125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
2.5 - betta
Last edited by jaysee; 07-18-2013 at 11:21 PM.