Hi, I'm a newbie to aquascaping but I am hoping to put together an Iwagumi -style 'scape in a 260l Fluval Vicenza. It has 2x 39W T5's (I think that translates as a low light setup - not done the maths ). Can anyone advise me on the best plants to use in this instance, without CO2. I might be ready to use a liquid carbon source but for several domestic reasons won't be using pressurised CO2. Thanks!