Ok you got it half right. there is no seperate resiviour. it is totally housed by the 1 tote no holes at all int he tote itself. The pvc goes to the lid level of the tote and the
pump tube and wires come out of the pvc pipe. Really just usin the pvc to help filter the vermiculite and be able to check the water levels. I will post some pictures when I get a chance I just got it running tonight gonna try it for a bit find the flaws and redesign as i need to. So far only flaw is thatI forgot filter cloth around the base of the pvc to keep the water clear of particles, so i have some small clogs right now in my drip tubeing.