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simple Flood/drain system
SUMP--5gal polybucket=$2.78--round to allow swirling action for sediment to settle to bottom & pump sediment-free water up to grow bed with a
--small submersible fountain pump
FISH TANK=20 gal Tote=$8
--Overflow to Sump
----Spigot (see center column)
----Clear vinyl 1/2" tubing down to sump
Spigot thru tank wall (or poly bucket...whatever). This wouldnt work for heavyduty thing like a full rain barrel or IBC tote, but is good for small arrangements. It took me many expensive trial+error attempts before figuring out such a simple, cheap, easy setup. Top of pix shows it all put together, Minus the wall. Bottom shows the individual components:
3/28/14---setup tank + raft--no fish
about (20) 2" net cups w/hydroClay (Hydroton) w/ a split cottonball to hold seeds abt 2/ea of broccoli + mesclun w/ (2) 3" pots for squash. Tank is a 20gal tote, 40gal airpump & round bubbler---no fish yet.
3/30--2 little broc's.
4/5--(4) brocs--no sign on the others yet, including mesclun
InDoorDigital Timer =Digital 7 Day Timer--polarized--049180498090= $14.98
PUMP--100w submersible fountain pump from PetSmart=$13 is on a timer
4/6--one more broc showing--added fert solution---had been straight water.
2oz wormTea+1oz Kelp->>murky water.
for about 5 min every 2hrs or so, then drains out the drain, & stays empty for 1 1/2hr or so, before the pump turns on again.
GROW BED---6"deep 29x18x6" 41qt plastic tray=$8
---on plywood to keep its shape
---filled w/ hydroton 50liters =$37
---Overflow=StandPipe
-----6" 1/2" sprinkler riser 046878380868 =$.72
-----1/2" PVC Riser Extender #049081143336=$0.58 to pass through the wall
-----rubber hose washers (to seal it up where it goes through the wall.
-----1/2" PVC Hose Adaptor on bottom side, to hold it in place=$.58
When the water rises to overflow, it just runs into the tank/tray below. It can just drain from there into fish tank below, but if necessary to direct the water to the fish tank, a hose can be attached.
---Drain--
-----w/Spigot arrangement in center column($6.90) below the growbed to drain into the tank below, or another growbed. The drain rate can be adjusted by varying how open the spigot is. This will allow the water to come in much faster than it is going out, which makes the level rise.
--1/2" Female Threaded Sillcock Home Depot# 108-003HC or 032888080034= $5.72
--1/2" PVC Riser Extender #049081143336=$0.58 to pass through the wall & hold the spigot
--1"x1/2" Rigid electrical reducing washer--(galvanized)--to provide structure, to keep spigot perpendicular to wall.=(2) for .98=.49/ea
--rubber hose washers (to seal it up where it goes through the wall. 573-093 or 046878279377= $ 1/12 of 1.19= $0.10
==Total cost of each spigot is 6.90 +Tax
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HoseAdaptor
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