I guess my question would be, if you're adding Quick Start then why are you continuing to do 25% water changes daily? If this is because you are treating the tank with medication that makes sense.
If you're doing it to bring down your ammonia and nitrites, I suspect that you're doing more harm than good because you're likely not giving the beneficial bacteria time to establish itself in your tank. When you pour the bacteria into the tank, it has to adhere to something like your filter media, decorations, gravel, etc. If you're changing water every day, I believe you're disturbing that process (and likely removing some of the bacteria that's in the water column), so you have to keep adding bacteria cultures. I don't know about Quick Start, but I know the TLC will cycle your aquarium in 24 hours.
What has worked best for me on a brand new uncycled/mini-cycled (from a move) tank (where I didn't have other tanks to get good bacteria from) is the following.
1) Set up tank
2) Fill with water - I like using Prime to condition the water and neutralize ammonia, less slimey stuff vs. some other brands that have aloe and what not, also much cheaper
3) Start the filter running (power filter with plenty of biomedia, or else a good sized sponge filter)
4) Pour in the TLC Start Smart or Tetra Safe Start.
5) Do not add anything else, do not do water changes, do not test the water
for a week. The Prime and/or the bacteria culture can throw off the readings and then you interrupt the process by panicking and doing WCs etc
- Tetra SafeStart can have a brief ammonia and/or nitrite spike, ditto on the StartSmart, but it usually goes away fairly quickly.
- It will not kill the fish to have a brief spike in those parameters, assuming they're healthy adults to begin with
6) Feed normally but sparingly during the week (e.g. don't' dump a ton of food in, but if the fish look like sunken bellies gradually increase the amount of food, what they'll eat in 30 seconds or so, and increase gradually from there as time goes on)
7) At the end of the week, test your water again (preferably with a liquid drop test kit like the Master API freshwater kit, since the test strips expire more quickly and are less accurate)

Fish and tank should be fine. If your water parameters are way off still at the end of the week, wait a day and test again.
Final notes: Per the bottles, Safe Start or StartSmart can be added periodically but you should not have to keep adding it. Like Marty said, if you keep changing the water right after adding it you're wasting money on the stuff.