Sudden Death

[jayc]

35 minutes ago, ricksza said:

Would Flourish Potassium be sufficient?

Yes you can use that. It's a bit more expensive as someone else has mixed it and packaged it for you. But you can't deny the convenience.

 

37 minutes ago, ricksza said:

If so, what level should I aim for?

Since you are doing this in a separate bucket (an old 1 litre ice cream bucket comes in handy), you can dose 1ml of potassium to 1 Litre of water. You don't have to throw away the water in the bucket. Just keep it for the next days treatment. If you want to throw it out, you can use it to water your plants in the garden. Fruit trees love potassium.