Hey thanks any pics would really help, do you use the yellow lids for where the baskets go? My set up will be very similar to yours savana. I've never used pvc before but am pretty good with engineering things, I don't want to make the mistake of doing this the HARD way first which is what I tend to do, make things harder and later figure out "o hey there is a product just for this problem". Is pvc glue safe for hydro or should I use silicone to seal fittings? Should I even worry about an adhesive to seal fittings/pipes with pvc?
I am going to locate my res and my chiller in a room that is about 3 rooms over from my grow room. I figure I can run a pump pushing from a rez in my control room, into my crawl space, over, and up into my room, then make a return from a rez in my grow room. I think if I pump water from the control room have a backflow valve installed before it gets to the room, then the only place for gravity to return water to my rez room will be through the output from the grow room. Water will be having to travel down and then up through the pipe but I think the rez and the plant sites will want to even out and this way I can have a pretty constant water exchange between the two rooms. Any thoughts on this?