hey so i need a light for a 40 gallon tank. the dimensions are 36 in length x 12 in width x 21 in height. i am leaning towards viperspectras 165 watt lights. they give out a lot of par and they are very good price wise. anyone have any luck/reviews with them? i am planning on upgrading to a 75 gallon later and will be planning to use 2 of these lights on it, but for now on my 40 itll be just one light. any suggestions/advice? please and thank you!