I use a compost mix from the local farmer supply that is buffered really well and stays smack dab at 6.8. I don't know where you live but if you have Agway nearby they carry the shit. Composted manure with humus. Add 30% perlite and you have a mix suitable for week 3 of vegging through finish.
I have a lot of pics but since I became a mod I haven't been posting pics very often... I should get back to it I guess lol! Search 'miss stinky's first grow log' and 'welcome to the darkside' and you will come up with two logs. 'so that's what stinks up in the attic' has a lot of pics too.