BlindDate said:One dangerous, scary, ghetto setup for sure. When they start to bring out the silicone sealant, it's time to run.
You all realize of course that you can do the exact same thing with
2 Beckett Pond pumps
2 simple timers (like Intermatic or those $7 mechanical ones)
1 mechanical float valve (mounted in the controler bucket)
Like This:
Place one pond pump in the res and plug it into a on/off timer (this one pumps nutes through a float valve mounted in the controller bucket). Place the other pond pump in the controler bucket also on an on/off timer (this one simply pumps nutes back to the res).
Program your timers so that they alternate and leave them on long enough to ensure that they complete the fill/drain cycle. Add an extra 5 minutes to be sure, it does not matter. I recommend the Beckett direct drive pumps rather than magnetic dives because they can run dry with no problem (like when the one inside the conroller bucket empties).
And there you have it. Much Much more reliable, no funky ghetto wiring, no relays, no construction projects. Doooh!!!
Any questions?
blinddate wrote...
One dangerous, scary, ghetto setup for sure. When they start to bring out the silicone sealant, it's time to run.
10K.....True, his system will work, but as I stated, all those relays and electronic float valves are completely unnessessary. My post was not an attemp to "hijack" but to point out a better method applied to the same system. Isn't that what we are here for?
Regarding silicone: Having to seal via silicone should always be avoided. Silicone sealant is Micky Mouse. Bulkhead fittings and Uniseals give a positive mechanical seal. In this sport, leaks can be disasterous, especially if security is involved.
10K...To avoid the siphoning effect all you have to do is provide a vent tube at the highest point in the line. That would probably be as the tube goes over the top of the reservoir. Use a "T" fitting and extend a vertical tube up a few feet or bend it back into the reservoir.However, I DO see a possible problem already with the alternative system you described, where the line running from the reservoir barrel to a mechanical float valve would result in a siphon being initiated in the res to controller float valve line, which would continue to feed the controller bucket every time the valve opened from the return pumping the controller below the float closed position. Thus keeping the controller bucket, and the entire crop flooded, regardless of whether or not the supply pump is running.
VERY IMPORTANT!
Notice the two small 90 barbs that were pushed into the fill and drain lines.
These are very important using this system.
Locate them on the line where they will be kept above the water level when your res is full.