Not while cycling no. If you raise the pH, the ammonia will become toxic (assuming it is over 2.0). SafeStart Plus takes up to two weeks to cycle the tank, when used correctly. You will see levels of up to 1.5, which is considered stress not toxic, if you add too many fish to start. With proper stocking initially, levels will not go higher than .5. Doing water changes every 2-3 days is removing the bacteria so SafeStart Plus hasn't been in the tank for a while. Sounds like you didn't give it time to cycle the tank.
For now, reduce food and add SafeStart Plus back into the tank and give it time to cycle.
Date published: 2019-01-24