Please note that I have not had time to research any of this, since arriving home earlier tonight. This is all raw data that I compiled while in Phnom Penh.
A really nice Thai lady, who speaks both Khmer and English, as well as her native Thai, has a business in Phnom Penh. Unfortunately, due to short notice, she was unavailable, she did light a fire under her staff's asses, and got them helping us. (Will explain this later.)
Anyway, the business is called Kannika Hydroponics Store (and Farm, about 100 meters away). The business is about 6kms south of Phnom Penh proper (well, the area I hang around, anyway).
I am going to contact the owner and ask her to email me a price list. I took some images while there. But, most were blurry. I couldn't see well, due to the intensity of the sun coming into the store while there. But, they offered quite a bit of what we would need, to start out, including:
These are all 230vac pumps. I would prefer to go with DC pumps, personally. I am considering bilge pumps. From growing up on the ocean, little RULE bilge pumps tended to be pretty bullet proof.
For media, they offer Perlite, Vermiculite, and Expanded Clay.
Image I stole from the internet. But, it looks just like the clay I photographed.
They offer starter trays for seedlings. (I definitely want to have a raft included in my systems, especially after seeing the young English guy's tomatoes doing so well that way. Won't hurt to try!)
They also have PE Polyethylene irrigating tubing and fittings, if I want to go that route. Perhaps some limited use. But, I think I want to stick with PVC pipe, for most of my system. I am accustomed to working with it. (I am open to change this view, depending on findings.)