I stongly disagree with the statement that:
until the tank is stable, which can be anywhere from 3-8 months. 4-6 is the average.
Please provide any sort of scientific support for this statement. In fact, perhaps the first step is providing a definition of what is meant by the term stable in this case?
It sure doesn't mean establishing nitrifying bacteria, it doesn't mean establishing the heterotrophicic bacteria either since they reproduce at lightening speed compared to the nitrifiers. Even those fw tanks that may develop anaerobes in any numbers should not take that long. It doesn't apply to plants either because they also settle in way less time.
Next, the nitrifiers live in a bio-film which attaches them to solid objects and helps to protect them from a lot of things. But they are not alone in there, all sorts of other beneficial bacteria cohabit the bio-film and there is a synergistic relation between the residents. One may even find anaerobes deep in the bio-film. So the bacteria are developing along side
each other,
Lastly, how exactly would any fish keeper know exactly when their tank is "established"? You can measure ammonia, nitrite etc., but what are the other factors that would indicate when a tank is "established" or is not established?
Bettabuddy664, I would not worry about much beyond making your tank safe in terms of cycling. Seeding greatly speeds the process, but there is a catch. We simply do not know how much bacteria is in or on anything we move over from cycled tanks. It could be more than enough or it could be too little. Normally, the way to find out is to add some ammonia and then see what happens in the following day. It the tank processes most/all of the ammonia you are good to go and if it doesn't you can take some time in which you add ammonia to complete the cycle. You can boost the effects of seeding by combining it with adding live plants.
Live plants will basically consume some ammonia and they also will arrive with some amount of the desired bacteria on them as well, So you can get a double boost from them. If you are able to seed from another tank and add plants, this should get you pretty close to safe pretty fast. The one thing you do not want to do is start by adding inverts, they are normally highly sensitive to ammonia, nitrite and nitrate compared to most fish. Also, do not allow the new tank to sit without any ammonia source in it for more than a few days, you want to make sure the bacteria are in tip top shape when you begin to stock. While they are not in danger of dying off, they can temporarily slow down.
I would strongly urge that you have an ammonia and nitrite test it for your start up phase. These kit will let you know how safe your tank is when the fish has gone in. They will also tell you when its safe to add your snails. Once you are seeing 0/0 readings for ammonia an nitrite, its time to add new inhabitants, The key in doing so is to make sure what is being added does not add much more than 1/4-1/3 of the waste that the current inhabitants already do. That will minimize any potential cycling issues from the addition.
However, I would still go back to what I posted above, Have your folks do a Google for "Fishless Cycling". What they find should change their minds on this issue.I do believe.