@Mmiller2001 The ammonia peak is sometimes around 4 ppm before changing the water, with an average pH of 7.5.
Initially, I performed almost 70% water changes, then reduced to 50%, and now I usually do around 30% water changes twice per week. I am dosing Nutrafin Plant Gro, Seachem Flourish Iron, and using Osmocote Plus for root tabs. The tank is 5 gallons, with a height of 10.2 inches, and the light is specifically for aquarium plant growth.