mg tomato plant food is fine. i just used it again yesterday. its been like the 3rd or 4th time this grow i have sued it. thats it. no more. My setup is usually egg shells and urine that is diluted very well. it works. im not gonna have any1 tell me otherwise cus i can clearly see the plant doing well. shes a 2 footer indica but its also outside and shes well taken care of. if u know wat u r doing then u are fine. but in other words, you could burn the plant if you dont. fox farm and advanced are good but if u cant get them, why not use ur own pee full of phosphate and if u eat bananas or loads of potassium that will come out in the pee.