Re: 10l - The return of the diatoms....
When I set the Mini M up, I removed the FE CO2 and Eheim filter to go on that, and replaced the filter with a small Azoo HOB filter. I have carried on the Excel and TPN+/N dosing as before. I am expecting to see some BBA due to loss of CO2 (liquid only), and diatoms due to losing huge amounts of filtration capacity/bacteria but so far nothing after maybe 3 days. The moss has continued growing and has even more light green tips. The HC is still as it was. Will be interesting to see what happens, if anything. The new filter was completely clean and not matured when I added it. I only have fine white floss in it.