I use Perlite in two gallon buckets, and these nutrients: General Hydropnics, CalMag both ordered from Amazon.
SImple setup, check out my post here: My setup.. I have most of the details of the setup in the thread.
Water with nutrients is pumped into the buckets 4 times a day, and it all drains right back to reservoir.
I have mine set up outisde, but i've had to put a tarp over the reservoir as it's been raining a fair bit lately.