The big change was the marketing of not too expensive and relatively accurate testing kits and the belief that the process of commercial breeding, transporting around the country, often internationally - followed by acclimatisation to local water parameters is somehow less stressful and less harmful to fish than exposing them to low levels of ammonia - a drop in the ocean but I guess you do what you can to make yourself feel better.
I listened to my lfs and cycled my first tank with neons all of which survived, and cycled my next one with Swordtails if the arriaval of fry is anything to go by they weren't overly bothered by it either. After reading about the fishless cycle I was going to use it on my new planted tank until I noticed that there were some mystery fry in there - eggs must have hitched a ride on the plants. So now I am basically doing a twice weekly 20% water change (along with some inoculation from the filters in the other tanks) until they have grown enough for me to add some more fish.
I'll try out the fishless cycle with the tank I've just bought and heretically replaced the Hagen Biolife filter for an Undergravel one.
I listened to my lfs and cycled my first tank with neons all of which survived, and cycled my next one with Swordtails if the arriaval of fry is anything to go by they weren't overly bothered by it either. After reading about the fishless cycle I was going to use it on my new planted tank until I noticed that there were some mystery fry in there - eggs must have hitched a ride on the plants. So now I am basically doing a twice weekly 20% water change (along with some inoculation from the filters in the other tanks) until they have grown enough for me to add some more fish.
I'll try out the fishless cycle with the tank I've just bought and heretically replaced the Hagen Biolife filter for an Undergravel one.