correct amount of fertilizer per gallon

[Carlos]

HI Ron: I'm a novice to hydroponics. I built already my 11 plants pvc system. I have a fertilizer called: DYNA-GRO and the formula on the label reads: 7-9-5. and also says that it contains 11 trace elements (don't know what that means) but it has no indication about the correct amount of fertilizer per gallon for, say, tomatoes or peppers. I'm assuming that 1/2 tsp of fertilizer for a gallon would be enough to start. Do you know the brand? do you know the correct amount per gallon? PLEASE !!!HELP!!!. CARLOS ESPINOZA PLANTATION FL.