Now are you using TAP Water right from the fossit or do you have a REVERSE OSMOSIS system, or do you let your water sit and distill?

If your using RO or Distilled water CAL/MAG PLUS is a must. Yes you can use BIOBUZZ in your nutrient regiment. Use the same as you would PER GALLON of water and once a gallon/nutrients is mixed dump it in in your tubs or if you know how many gallons fill your tubs you can just apply that amount to your tubs on water changes. PPM Meter (PARTS PER MILLION) for nutrients to water ratio (i still need to get one) and a PH Tester to test the PH of your water before and after apply nutrients this is also a MUST. Hope this helps.