ive never heard of them, just make sure they are not on the cheaper side (like miracle gro) because they will not work for marijuana, you need over 20 essential nutrients inlcuding boron and molybendum and all kinds of stuff cheap shit doesnt have i hope this helps good luck, if you cannot find any info on this try getting some general hydroponic nutrients, they are cheap (20 bucks for 3 bottles everything u need to grow sucessfully) and work good to