U
useless.gardens
appreciate you bro. checking the hortilux super hps boxes they say for both mag & digi ballasts. since the e-ballast is adjustable, i was thinking about grabbing a cheap 600w bulb of flee-bay. the cheap bulbs, when you read the descriptions, dont really indicate which ballast is optimal. as a back-up, my goal wasnt to buy the best bulb out there. its a toss up. before i put the ballast away, i want to use it for a week to make sure it can plug & play in an emergency situation. ill check it tonight with the 400w super hps from hortilux to make sure it works. just went through fleebay & cant find shit. maybe my search wording isnt optimum. end of the day, im trying to spend < $25 on a cheap digi rated 600w (over a 400w) bulb.Digital/electronic ballasts operate at higher frequency, better to run bulbs listed intended for digital ballast to play nice with the higher frequency.