I will post photos tomorrow of 2 weeks worth of growth without CO2 but I did a water check last night and Ammonia and Nitrite are down to 0 finally, I'm going to setup an air pump for evening to be safe and I'm going to buy a couple of Cherry Shrimp along with a few CPD I think this weekend. I'm probably going to go for 10 Cherry Microrasbora, probably off ebay in a few weeks time. I did think about embers but everywhere has them and I think the Cherrys could look awesome. I don't know if they easily breed, it would be interesting if they did though I'm not fussed either way.
Only issue I am unhappy with apart from the CO2 is the height of the grass, thought it would get to 5cm max but it appears to be getting to 10cm with ease. I don't want to bring out the remaining 15W light as I think 35W is overkill but if needs must.