MrAwder
Member
even simpler to put a reservoir with a pump for pulse on each level of plants with an overflow set at 7" from the top one feeding a lower one, which feeds a lower one, and so on until you reach the bottommost reservoir, which has a small pump in it that is just big enough to maintain the water level in the top reservoir. a trickle would suffice as you are not feeding the solution through plants and diluting it. instead it is being fed in parallel. the bottom most reservoir would have the float in it. to receive solution from the volume tank as per normal. a pump failure in any part does not drain the individual plant reservoirs.
you would lose some operational redundancy but not much if you check your plants daily anyway.
This is what I was vaguely imagining but had not fully sketched out yet. Specifically the cascading control buckets. The only thing I was trying to avoid was the pump for every level. I feel like that's a lot of extra infrastructure especially on my scale of growing which is smaller than than either yours or hl45s. What about a gravity pulse feed from the top reservoir? Just a second output on a solenoid. The issue here being that your pulse volume is limited to roughly one reservoir depending on how fast you refill the top res... Getting equal pressure from a gravity fed manifold could be an issue depending on the number of plant sites also. Just thinking out loud