Measuring nutrient PPM in soil grows

I have a TDS meter coming and I'd like to get some opinions on the best way to use it with General Hydroponics Flora 3 part. My seedlings are about 1.5 weeks old. Can someone give me a general idea for doses.... starting with seedlings, then veg and finally bloom. Again, this is a soil grow.
Thanx in advance!

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i use pro-mix and a tds meter to measure EC. i reccomend reading "mandal mike's fertilizing wisely". The lighting, soil and pot size matter. Now im a first timer about to harvest, so here's a general idea: 200 [email protected] after first set of true leaves, 400ppm-700ppm untill the final flush and fertilizing every other watering or so. The dosage depends a lot on the strain too, something showing hybrid vigor would require more nutes than a slow low bushy indica. i cant give u specfic advice on those nutes though. i use three diff ferts for the diff stages of growth 3-1-1, 2-2-2, 2-8-4.