Just buy indoor gardening fixtures. ATI and the like are just price gouged. literally 1/4 the price you can also find bulbs for significantly cheaper. I highly recommend htg supply for bulbs and fixtures. Here in CO there is literally an entire industry centered around growing things indoors. stop buying this overpriced nonsense and they will stop selling it. only thing I can't find is heavy blue bulbs. still have to buy from the Germans for those. 4ft 8 bulb fixture is less than 300 dollars from HTG supply. I dare you to find a fixture anywhere in the same realm from the "marine hobby" community. they gouge us because they know we'll pay. https://www.htgsupply.com/products/slimstar-4-foot-8-lamp-t5-w-6400k-bulbs/ just gonna leave this here