Mixing CSM+B in 1tbsp per 250ml of water makes it roughly equal to flourish, and they recommend 5ml once or twice a week for every 60 gallons. Was looking over my notes on this but I made my mix of csm+b weaker so I wouldnt have to think how much to add. If someone could confirm this is the proper concentration for CSM+B.
This is very light dosage compared to the EI method that I believe is one of the most popular here. Since I still dont know what you mean by minimal water changes. You want to keep lower dosages so you dont get too high concentrations of fertilizers. The amounts added with EI are safe because of the huge water changes so you will never have more than twice your weekly dosage in the tank.
Are you also considering adding some Potassium? Thats all I add to my lower tech tank along with the CSM+B. Works well for me, get plenty of nitrates from the fish food and waste.
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