say im using a 5 gallon bucket and need to fill it upto the 3 gallon mark, do i need to make up a 3 gallon mix of nutes according the nutrient instructions, as it just seems quite a lot to give a plant once a week, ( i say once a week becasue this is how often iv been told to change the water and clean the bucket etc...) or do i use a more dilute mix? any input would be appreciated thanks