I just had my biggest blunder whit the blumats till now. and it was all my fault.
I mainly use blumats so i can be absent for weeks at the time. so now i just started a new run whit northernlight, hooked it all up, just like the last few times tightend the valves abit exstra, and off i went for a longweekend in dublin whit out thinking witch res i was using. so when i got home it had all run out trough one of the pots, and all the 300 L water was already getting a thin layer of algee,growt. and it took me the hole night to dry it up.
so the lesson i learned is to allways start whit the small res. then adjust, then bring out the oversized one, or spend a week adjusting them befor they are left alone.
Takes about week to dial in.......