Remove the worst performing strains. Those are your main vectors.
Use Greenshield or Physan or similar to clean pots/trays after harvest. Tools between use. Floors weekly. Etc. You get the idea. Clean, clean, clean, clean, clean, clean.
Get your mites and aphids and other pests under control.
Supplement soil with crab meal and alfalfa meal. We use a half gallon each per ten cubic foot batch.
The meals provide natural forms of chitosan and triacontanol. In i502 you can't spray aspirin without getting in trouble. This mix will burn your small plants. We amend with the meals in 5 gallon pots. Once you get all your shit under control (healthy moms) your clones should be rooting in 7-10 days.
When your runty plants still produce grade A pot (just less of it), you know you are kicking ass.
G `day Sticky Sat
It aint fckin TMV bro .
It is mites . Microscopic little fckers .
Recent times people have had plants tested no TMV . But broad or russet mites .
The OP made a new thread when he eventually worked this out . Made a huge apology for the bum steer .
Worse in Spring / Summer . They don`t like the cold and slow down reproduction .
Thanks for sharin
EB