Continue spraying soap but with a small part of vinager, and smashed garlic, take of the plant of the tent, clean then with bleach diluted in water, all your setup then let them dry till lost the bleach smell, to put set your grow again continue doing that and as the plage decrease, increase the time between the applications. The dosages of the itens should be found by you, as you use good sense will be OK. That is the non biological way.