Winston - I know you want to help, but if you truly do not know the answer, please do not confuse the issues, ok?
BioSpira is a solution containing dormant beneficial bacteria - the Nitrosomonas that convert ammonia to nitrite, and Nitrobacter species of bacteria that convert the nitrite to nitrate. They are the two species of beneficial bacteria you are culturing in your biofilter to process the fish waste.
By adding BioSpira, you are adding a colony of both types of beneficial bacteria directly to your tank, rather than waiting for them to come from the environment. (you are lucky your lfs carries it - it is often quite difficult to come by!)
Typically, the dose is given for the amount of bacteria suggested to start the cycle for a low to moderately stocked tropical tank. Since you are dealing in goldies, you have to realize that you need a much greater population of beneficial bacteria in the tank to process the amount of waste the goldies create.
You hvae the option of doing several things with your BioSpira. It will cycle a tank. But, contrary to the advertisement, it will not be able to create an INSTANT cycle in your tank. It will go a loooooong way towards it, though.
The pitfalls with BioSpira are that you are adding the beneficial bacteria in a liquid slurry to your tank water. They are then free floating, circulating in your tank. They are NOT attached to your biomedia in your filter. It takes time for them to sort it out, attach to the biomedia and start multiplying. Warmth, food, type of biomedia, circulation, etc. all are factors determining the time it takes for this to happen.
If your tank is cycling with fish, the fish are adding ammonia to the water. In order to protect the fish, you need to change out large quantities of the water - probably once a day or so - to protect your fish from ammonia. But if you change the water, you are dumping that expensive BioSpira right down the drain. So you cannot really change the water during the 1-2 weeks it takes for the bacteria to colonize the bio-media platform you have provided in the filter. Not changing the water for a week may work for a lightly stocked tropical tank - but a goldie can polute a tank in a day!
You can add half the BioSpira, and some Prime , replacing the Prime every day, testing the water and perhaps feeding exceedingly sparingly during the week, then change out the water, add more BioSpira and Prime and give it another week. At the end of the second week, you should have enough bacteria residing in your filter that it will start to grow, and, with care, you will have a cycling tank in another weeks or so.
Or, you can do as I have often done. I like to do a fishless cycle with BioSpira as a jump start. I feed the bacteria with clear ammonia, testing each day, until I see the beneficial bacteria grow in numbers capable of processing the daily addtion of ammonia. Then I add in one fish - and slowly add more fish, to slowly raise the amounts of ammonia in the tank.
The colony of bacteria will grow to meet the food quantities (ammonia) that it is fed, but it cannot do it overnight. the BioSpira is safe for the fish - it simply consists of cultures of the same beneficial bacteria you are striving to raise in your biofilter.