Calibration guidance for a 1,500-gallon hydroseeder applying HP-FGM®, ET-FGM™, BFM, EFM™, Base Mulch and Biotic Soil Media™. Calibration tables specify mulch mix rates per gallon, load in bales and pounds per 1,500-gal (5,678 L) tank, and the area covered per tank at application rates from 1,500 to 5,000 lb/ac. Step-by-step instructions show how to calculate and stake a calibration rectangle, determine slope length and width, and load the required number of bales. Photos demonstrate why hydraulic mulch should be sprayed from two directions to achieve more even slope coverage.
Key Points
- Calibration tables for HP-FGM, ET-FGM, BFM, EFM, Base Mulch and Biotic Soil Media list mulch mix rate, tank load and area covered per hydroseeder tank at multiple application rates.
- Steps to calibrate the hydroseeder include selecting an application rate and product, finding the area one tank will cover, measuring slope length, calculating width and staking a rectangular area.
- Example calibration: a 1,500-gallon hydroseeder applying High Performance-Flexible Growth Medium® (HP-FGM®) at 3,500 lb/ac covers 7,467 ft² per tank using 12 bales at 50 lb per 125 gal.
- Photos of the same slope show suitable coverage when viewed from the bottom but serious lack of coverage from the top, emphasizing the need to spray slopes from two directions.
