Nothing you cant keep?? In a QT tank?? Under those lights? Umm, sorry, I'm lost with this one. I know your not keeping corals in a QT, and fish don't need lighting. ?? Your killin me on this one Goby.I have an EVO Quad Clip on my 10 gallon quarantine tank. It has twenty, 3 watt LEDs and there's nothing I haven't been able to successfully keep under it. It has both white and blue LEDS and there is a night mode for running blue LEDS only. You can get a model with or without a timing option...the timing option is a few dollars more. The fixture clips to the side of the tank...it looks very modern and clean. I actually have 2 of them so if I ever want to use them on a larger system, I can mount them side by side...very modular. The reason I don't use them on my display tank is because I prefer a fixture that's dimmable w/a wider color spectrum...neither of which is absolutely necessary. I paid about $85 for one of the EVO Quad Clips and $75 for the other. I bought one on eBay and another from an online retailer.