Ok so here is my situation, I have a 10 gallon reef tank that I've had for about two years and in the last 6 months I set up a 20 gallon salt tank. The 20 gallon cycled months ago and has some live rock in it. I want to transfer the corals from the 10 to the 20 gallon. Seems simple enough but here is my problem. The lighting I purchased in advance for the 20 gallon is currently on the 10 gallon supporting it. The 20 gallon has a light on it that I originally had for the 10 gallon but wasn't strong enough to support some of the corals I wanted to add to the tank. I want to transfer the corals over a period of time so that I don't upset the cycle to much but they may not survive in the 20 with its current lights. Need some ideas here on how to approach this.