Summit Series 1000w dimmable HPS CMH MH ballast, 208 240 277 volt grow light reflectors These pots will accommodate a These pots will accommodate a 2' to 4' plant through the vegetation and growing cycles depending upon the space available A workhorse pump that will power your Evolution RO1000 to 80 psi and is compatible with other 1000 1500 GPD RO systems to boost them up to 150 psi The Summit series modular system alsoallows different lamp arm configurations and a variety of reflectors for differentgrowing styles Simply select thecorrect lamp style and wattage and the ballast will now properly operate that waywithin the proper operational parameters