so for the past several monthes algae and i have been at war. i have decided a two week blackout should do it in. now i have concerns for the plants in my tank and im not sure if they will do well with out the light for the two weeks. also what is an appropriate amount of time to leave the lights on in my tank to keep this algae from advancing on my tank again that will still allow my plants to grow? its about 54 watts of 6700k T5 HO light on a 75 gallon tank. thanks in advance for any advice