I'm confised with what this conversion equates to. I have a PPM meter that usually reads 650-700 for Veg and 800-1000 for Flower.
If using just Maxibloom, do I need to be using Micro as well in Veg and Flower or at all???
When using MaxiBloom you do not need Micro or anything else.
MaxiBloom at 1 tsp/gal or 7g/gal can take you start to finish successfully. If your burning then you must either be low light conditions or have a very light feeder. Everything I've grown can take 7g/gal under HID lighting.
Maxibloom is a one part though..if 7g/gal is burning just flush and try running it at around 4-5g / gal. In early veg maybe just do 2-3g/gal for the 1st couple days to week.
// You'll have to do some research as to what conversion you pH meter is. Do you know the model number?
Once you know your conversion factor this chart might help make sense of it all. PPM is a very inaccurate way of discussing nutrient strength with others if nobody knows their conversion factor. For instance 1000PPM @.5 = 1400PPM @.7