Chris_Homan
Member
I had a small Cyanobacteria outbreak which I thought I had treated successfully. However, I can see through the front pane that there are still Cyanobacteria lower in the substrate. Is this something to worry about?
Can also spot injection Flourish Excel if you like as well to eradicate
Tape a piece of card along the substrate, that will block the light and knock out those last bits - leave it for a week or so. You can also, carefully not to scratch the glass, use a credit card to run along the front edge and syphon it out. It will only be along the glass as it needs light.
This didn't work for me either, seems the light is refracted down within the glass itself and was still illuminating the outer edge of the substrate.Tape a piece of card along the substrate, that will block the light and knock out those last bits - leave it for a week or so.