Buddy: I think it is recommend 2-6 grams per gallon of medium for MET52.
Datdank: Seriously? Have you ever had root aphids? They drink neem shakes to build muscle, use silica to slick back their hair, and have magic tea with their biscuits at tea time.
Oldschool and Organicyumyum: I went through the same thing. Ended up killing giant plants. Transplanted from 3 gallons to 10 gallon
smart pots with lots of MET. I think if you do this your only chance of success is to break up the root ball real well so you can really get the MET in there. Also once the RAs have compromised your plants health, God knows what viruses and diseases are thereafter infecting your plant and it is very difficult, if not impossible to bring them back. Was reading about this situation with aphids and citrus trees; the citrus trees get some kind of viruses after the Aphids do their thing. Bad ju ju.
I have been reading about some bioinsecticides that might work synergistically with MET52:
Paecilomyces fumosoroseus Apopka Strain 97 has been approved for use on ornamentals, non-food crops in greenhouses, and interiorscapes to manage whiteflies, aphids, thrips, and spider mites and is sold by Thermo Trilogy Corp. In addition, there are fungal antagonists available to combat various fungal pests.
Verticillium lecanii is used in Europe against greenhouse whitefly and thrips and aphids, especially in greenhouse crops.
Pandora neoaphidis, a common, naturally occurring pathogen of aphids that can be particularly effective during moist periods. Zoophthora radicans is another common fungus, with a broad host range. Strains have been isolated from several caterpillars, including diamondback moth, leafhoppers, aphids, and some weevils. Other related species infect thrips.
There is some stuff called boregaurd from India that has a lot of those fungi in it. Seems like Europe and India are way ahead of the US on boinesecticides. Also Caps foliar pack is the only place I have found some of those fungi for purchase in the US, but I think a Paecilomyces fumosoroseus Apopka Strain 97 product has recently been approved in the US.
Ultimately, I want to have a medium that consists only of Aphid killing bioinsecticids.