Advanced Nutriments Flawless Finish, any advice?

[Lolabird]

Has anyone used the Flawless Finish product for flushing? I have a coco grow (indoor) which cannot be moved due to the buds being too heavy and currently supported by tent yo-yos!!

I have bought flawless finish but reading mixed instructions on how to use the product. Any advice on how best to flush this coco indoors?

thanks all in advance