The simple fact is that detrius is part of the feeding cycle we replicate where the ATS is the base controling component.. the other "controls" are the additives..
so itīs a matter of getting all the pieces of the feeding cycle in the right balance, including detrius feeders (stars, heremites, snails, schrimps, ..).
For additives I use Kalkwasser for top-off and dose Mag every now and then, when it's low on my test set.