Hi everyone, Just a quick introduction. I've been fish keeping for about 4 years now and have learnt a lot but still learning. Aren't we all? I have a Fluval Roma 90 which is planted but although I've dabbled I don't use co2. I'm currently in the middle of doing up the aquarium completely and I'm getting to the nitty gritty now so thought I'd register here to see what more I can learn.