Feed/Nutrients Guys?

Dro joe said:

They are also formulated for soil not coco, wouldn't advise using them.

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They are formulated for ALL growing mediums. Soil, coco, DWC, aero, ebb and flow, you name it. In fact, I just checked the Blue Planet website and there's a badge right on the home page that says its coco coir safe.

Dro joe said:

He asked for the cheapest, buying a blend that requires calmag to be even with a blend made for coco already doesnt make sense bud.

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The MICRO contains a shit load of calcium. If you're using Blue Planet in Coco and need more calcium, you can increase the Micro a little bit and should be fine. Or increase Part A on the two part. I've grown using the 3 part in coco, just following the recommended chart and never had any deficiencies.