@SunnyX Per Brightwell the recommended dose is 1ml daily for 50 gallons on a low nutrient system (see below). If my math is correct, your dosing (according to Brightwell) should be roughly more or less 3.5 ml per day. You are way exceeding that, not less according to above.
With that being said, I'm not calling you out or saying your statement above is wrong as clearly you have a complete understanding of this, I'm just trying to follow your methods and I am trying to figure out why the discrepancy? Or, how you came to the reason you dose 10ml per day? Thanks!
Per Brightwell's website:
Stable, Low-nutrient Systems: To maintain a low concentration of available nutrients in all marine and freshwater aquaria, 5 ml (1 capful) of
MicrōBacter7 per 50 US-gallons (189.3 L) [≈2 drops per gallon (3.8 L)] of aquarium water no more than once each week; alternately,
add 1 ml per 50 US-gallons daily (or 1 ml per 25 US-gallons every other day). Turn protein skimming and UV-sterilization off for a period of 4 hours following addition to aquaria. Dosage may be adjusted according to perceived benefit to aquarium, however it is recommended that the dosage not exceed 1 ml per 25 US-gallons per day. With time, hobbyists may determine that decreasing the dosage and/or dosing frequency by up to 50% sufficiently maintains a low-nutrient environment. During changes in biological filtration or when increasing the aquarium bioload, dose 1 ml per 25 US-gallons daily for one week, then resume “low-nutrient” dosage.