I could do with your help guys. This is my PFK cube. Today is day 256 since it was set up. Specs are; 25litres RO water remineralised with Seachem Equilibrium HOB filter with Purigen and siporax media 11W Power compact Hagen Yeast CO2 E.I. fertilisation Tetra complete substrate I'm really happy with the way the Narrow JF has grown in and the E.tennellus, but the other plants are a bit of a washout. The stem at the back is Mayaca fluviatilis and the new growth is tiny and really stunted and tiny. Anyone know why? It was fine until A few weeks ago, a few weeks after I started EI! The Cryptocoryne x willisii is doing nothing and I think I'll remove it. The Marsilea and other leaves are getting an annoying bit of BBA. I know this is often said to be linked to CO2 levels but I have persistent BBA in my main tank too. Any ideas? Look forward to any comments! Cheers guys.