I make 500ml batches of my micro and macro solution , if kept cool and dark it lasts perfectly fine
4tsp Potassium Nitrate
1.5tsp Potassium Phosphate
6tsp Magnesium Sulphate
mix into 500ml boiled and cooled Water
3x a week. (10ml per 50ltr of Aquarium water)
1.5 tsp trace into 500ml boiled and cooled Water
3x a week. (10ml per 50ltr of Aquarium water)
Dose 1 each day and rest on the 7th day.
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