I set up my new 60L Nano a while back and swapped the lights over. The 37L looks fine with the Eheim 7W light that came with it (I made a new stand for it some years back) but the 12W spot isn’t cutting it on the 60L. I did get a new 15W spot from China but it doesn’t seem any brighter than the 12W. I’ve spent quite a bit on the setup so far so I need something at the budget end. I can get a 21W Chihiros A361 for about £25 do you think it would provide enough light? Just wondering if it will reach the substrate well enough. Here’s the setup so far. I think it’s clear that due to the hardscape a single source spot probably isn’t up to the job. The Eheim doesn’t look as bright as it really is as it’s still a bit overgrown?