So a few weeks on and things have stabilised nicely. I've given the right hand side a bit of a tidy by removing some of the thin leaf plants (no idea what they were called!). I've recently increased the lighting back to 100% fading to 70% over the photo period now the diatoms have disappeared. Hoping they don't come back.
Fish seem happy and plants are growing well now. The inline co2 is definitely making a difference.
Fish seem happy and plants are growing well now. The inline co2 is definitely making a difference.