Flower fish blood bone Topdress?

2cent

Well-Known Member
The gia green and all them all use it for flower mixes but I don’t know ratio

I have a potash high compost I mix to ewc for Topdressing , I’m wanting to add gypsum barley malt and bran as I do

but wanting to swap the chicken poo for diversity so thinking to use some fish blood and bone which is similar npk 5-4-4 but unsure how much to add per 50l pot ?
 
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