IMO the products sold to cycle are a waste of time and money....
To cycle it can take 4-8 weeks
IMO the only chemical you need if you are on city water supply is a good dechlorinator to be added with any water added to the tank
Chlorine/chloramines can kill the good bacteria needed to start and keep the cycle and the fish....
Nitrifying bacteria (NB) are sticky and adhere to everything in the tank, like the the walls, decorations, plants both real and fake, in the top layer of the substrate and in the filter media, very little is in the water column itself so water change will not hurt the cycling process....but over vacuuming the substrate and over cleaning or killing the NB in the filter media can slow the cycling process or cause a mini-cycle
You can cycle a tank with fish safely but only if you are dedicated and make the needed water changes to keep the fish safe.
Ammonia can build up within 3 days and burn the fish and long term scar tissue can make life/breathing difficult
Nitrite can bind with the blood making it hard for the oxygen transport and the fish can suffocate
Nitrate at high levels can affect the immune response
pH can vary and most fish adapt as long as it is stable
You know you are cycled when your water prams read:
In 10g, substrate, filter, decoration, heater, lights and a fish.....
Cycling can take 4-8 weeks
Since you don't have the reagent type water pram test you can make 50% water changes every 2-3 days starting on day 3, vacuum the substrate every 7 days and only in the areas that you can reach without moving anything (decoration) or disruption of plant roots if planted (floating plants can help with ammonia uptake)
Filter media-only give it a swish/rinse in old tank water with a water change if the water flow has slowed to get the big pieces of gunk off, you want the filter media to look dirty.
With the strip you have check the water daily and if you get readings of ammonia or nitrite 0.25ppm or greater make a 50% water change (water only) even if you just did a water change
Take you water to the LFS at least weekly and get the numbers and write them down
If you fish ever looks or acts odds...make a water change
It is a good idea to start a log book and keep everything written down (I still have log books from the 70's...lol...kinda yellow now) and I still refer to them at times...log books are a great tool.....
IMO-investment in a good quality liquid reagent master test kit for ammonia, nitrite, nitrate, pH is a great tool for any level hobbyist......