ok i have had my tank for over 2 years now and i want to introduce live plants. I am changing my gravel over to sand and under the sand i am putting this substrate ( http/www.arkpetsonline.co.uk/tetra-plant-complete-substrate-58kg-p-4077.html ) I am not sure what lights I have in my tank because the logo has slowly come off. But I do know the lights are the original bulbs that come with a juwel rio 180. any help with letting me know what lights I have would be great. I am also considering getting under sand heating do I need this. I have also got some tetra plant crypto food to put at the base of the plants. Do you think the plants will be ok or do I need to research more thirst. Any help will great.