So, i'm looking at buying some extra lighting for my tank for helping emergent growth, i've seen a few clip on led lights such as these
https://www.amazon.co.uk/LifeBee-Flexible-Gooseneck-Greenhouse-Hydroponic/dp/B06XBW3QZY/ref=sr_1_23?ie=UTF8&qid=1518777325&sr=8-23&keywords=led+grow+light...