Hi I have a juwel rio 180 tank . At the moment I have 11 lemon tetras , 9 corydoras harbrosous ,and plan on getting 16 cardinal tetra and 6 otocinclus , oh I also have 30 assorted small shrimp !! The tank is planted and I feed once a week and use flourish excell every other day . Lights 2 x 45 watts for 8 hours but still my plants keep going transparent and black in parts , I have dwarf hair grass , tall hair grass and ECHINODORUS TENELLUS this is the one where the leafs are not healthy . Now for the question what co2 system would you recommend that includes everything and is both safe and easy to use . (not to expensive up to £200) I also have more algae then I would like !