The product label for Peters Professional Acid Special 21-7-7 states you use 1 tsp of product with 1 gallon of water equals 245 ppm (Parts per Million) of Nitrogen.
Peters Professional Acid Special 21-7-7 would not help in eliminating bamboo. Bamboo is very tough to kill and will take repeat applications using a non selective such as Roundup QuickPro.
Bamboo stalks should be cut and apply the non selective herbicide directly to the fresh cut stump.
Generally speaking, if the pH of a fertilizer solution and/or surrounding media is too high or too low, the result can be slow, weak, and malformed growth. Extreme levels of acidity and alkalinity (pH) can cause some nutrients to become toxic, even killing plants. However, in this case, we would recommend contacting the manufacturer of Peters Professional Acid Special 21-7-7 directly for product support and clarification by either calling them at 1-800-492-8255 or by visiting their website's contact page here.
