I decided to quit addressing these posts when my abilities as a father were attacked. I defended myself as a good parent snd that was going to be my last words.
Beside that, I havent responded because none of you have actually tried this. You are theorizing that it wont work, and I have actually done it repeatedly on a massive industrial scale that most of you can't even fathom. Does it matter what you think or imagine won'tl work if I've alreay done it. None of you have proven me wrong, you've just said I'm wrong without proving it using any remotely scientific method.
Heres how I started using this method. I was picking out some butterflies for the curator of the public aquarium. He asked about my 125 and I told him it was set up and to temp but I wasn't looking forward to cycling it. He said "just use the used Biochem beads out of the coral system and your done, what do you think is the difference between you cycling the media at home and it having alreay been cycled here? Just make sure you put in the first livestock within 48 hours". I've done it this way ever since. Kinda funny but the only person that here agrees with me has actually done it and the people that don't haven't. Does anyone see the logic here?
To answer some specific comments, since appearantly it's now expected of me;
Yes you, the hobbyist/retailer do know more than you did 20 years ago. Because we the indutry have theorized, tested, and perfected the methods that get passed down to you. Do zoos go to lfs to find out how to care for fish? You think a manufacturer is going to invent something then take it to a store and say sell these and let me know if it kills everybody's fish? All that fancy equipment you can buy nowdays, who do you think tested that and made the alterations to it before you had even heard of it? The hobbyist magazines don't even get told about new stuff untill it's already benn tested, sometimes for many years. Where does this get tested?
Some of you have said just use live rock. You are proving my point for me. You are using the LR as the filter media ( as opposed to what I use as the main media) which already contains the bacteria. It's the same thing accept that what I use as filter media has enough bacteria in it to actually use immediately.
I never put uncured LR in my tank. You know how I cycle, why would I want to skank my tank.
If you can't trust your lfs, you can't trust them. To go back to my helpful self for a second, heres if you can trust them. If LR is on a system with no fish there will be no fish parasites after 14 days of no new additions, the same can be said for the filter media and water in that system. If this is not the case you can stiil use my method, you just need to change your stocking sequence. Use their media (enough to handle your setup) and add anything but fish first. Wait at least 2 weeks before adding fish. The best thing to always do is quarentine your fish for at least 2 weeks anyway. I start my tank stocking with the first batch of fish and no invert so basically my main tank is my qt for that first batch. If ich breaks out I can just treat them in there since there are no inverts yet.
Every aquarium book I have says that using old water is not effective. even though it does contain the proper bacteria the organism per volume ratio isn't even close.
If anyone really has the need to prove me wrong then prove it in a scientific manner.
*Set up 2 identical tanks (never consider evidence without a control group)
*Use any type filter that is recomended for that size tank.
*Place the ammount of precycled used filter media in the filter that is recommended for that tank size. This is where the error factor can sneak in. If the source system has more than the recomended ammount for their livestock load it will effect the amount of bacteria per media volume ratio. This is usually not the case for a LFS. I said usually. The dirtier it is the better.
*Use the same ammount of new media in the other tanks filter.
*Since you should only add about 25% of your total livestock at a time, do so in both tanks.
*Test water in the tanks.
If you fail to do any of the following, you simply not setting up a tank correctly
When you get the used media it must be treated and transported as if it were livestock. In a bag with 25% water, 75% air.
The tank must have unclorinated water.
It must be at the proper temp.
Livestock must be added within 48 hours.
The statement " You are wrong because I think you are "is absurd