Yo-han
Member
In the lfs I work we use aqua soil in our shrimp tanks. A few weeks ago we had some planaria in there so I removed all shrimp dropped in some de-worming medicine and after all planaria was dead I did a 90% water change. Placed back the shrimps a few days later and most started dying. Tested water, all testable parameters were fine so did another 50% water change. Still shrimps kept dying. So I was thinking about the binding properties of the aqua soil for thinks like PO4 and organics etc. Could it be the case that aqua soil binds the medicine, leading in dead shrimp when they're walking on the substrate?