Thanks for your support El Timbo much appreciated.
Apart from choosing pm resistant genetics, if you are suffering pm every year in the same areas of the house, it's very important you treat all the other plants nearby (before starting the grow and before pm usually starts to appear from July to Sept) and clean with bleach the gardening tools and surfaces. Then use preventives on the plants like sulfur, potassium soap, milk, neem, etc .... if the problem is still persistent doing what i recommended, then one last effective solution (not the most desirable) is to use a sistemic fungicide.
Apart from choosing pm resistant genetics, if you are suffering pm every year in the same areas of the house, it's very important you treat all the other plants nearby (before starting the grow and before pm usually starts to appear from July to Sept) and clean with bleach the gardening tools and surfaces. Then use preventives on the plants like sulfur, potassium soap, milk, neem, etc .... if the problem is still persistent doing what i recommended, then one last effective solution (not the most desirable) is to use a sistemic fungicide.