Im running 2 x 600 dimmable lumatek's with the super lumen switch on, all good..
ballasts not running too hot either, i found that they blow some makes of bulb..
ive blown 2 x sunmaster bulbs, but now running Osram Plantastar's with no problem's at all..
i was gifted a 600 lumatek with a sunmaster 600mh cool bulb, its the best thing in the world i will never use anything else ever again.
hows it going sham are those nl x cheese doing ya proud brotha.
If you want the best out of your digi ballests use sunpulse bulbs.. There made for Digi ballests to get there full potentail, Ive just spent 320 on 4 of these, Havent used them yet but if there good enough for heath robinson there good enough for me. And the guy at my grow shop swears by these and he knows his shizz
sometimes i wish i sold my bud so i could have expenxive things lol.