Review on API CO2 BOOSTER: Promotes Plant Growth & Vibrant Aquarium Plants – Daily Treatment for Lush Results by Kristi Martinez

I have read some reviews that using this product has killed some or all of their fish! I have 30 gallons and the recommended dosage is 3ml per gallon. I was careful and started with 2ml and increased to 3 in 3 weeks. My fish are doing well and the plants are growing. I can't comment on how good this is because some plants do better than others. I also use fertilizer, potassium and iron several times a week.