Hi guys, i have a HOB filter for my 27 litres tank. But i havent have any success on my carpet plants - glosso. i am very much convinced that i had improved my CO2, lighting and dosing. The other plants are doing well except for the glosso. while i still see CO2 bubbles from the diffuser gets carried near the substrate, there's still some dead spots and detritus that accumulate on certain area of the water surface. So i'm just curious is there anybody out there with HOB filter that successfully grow carpets?