Sounds pretty much like my setup, only I set the aqualifter pumps on top of my sumptanks lid so no check valves are necessary, and I used 1 gallon milk jugs for larger reservoir that are placed beside the sump tank. Mine has been working great for several months.Well I jsut made an auto doser from a digitial timer, some hose, check valve, 3 liter soda bottle, aqualifter pump. I am sure you can guess how it works. anyone dislike this idea? I mean i already did it but still.
Not difficult, just filled it with water and timed how long it took to drain to get a ball park figure. The timer I used could only be set in minute increments, so I chose 2 minutes because I could get 15 doses out of a jug. Although I suppose I could have choosen 1 minute per day and just doubled the concentration of the mix to have it last longer. Just mix 15 daily doses of ferts with a jug of water. Do the test with it in place as it will be used since changes in height will change the flow rate. Recalibrate anytime you change it's height.How difficult was it to callibrate the amount of time it needed to run?
Thanks Wasserpest. Now its a 24" tall tank. I tried it about 10" above the stand base and it just didn't have enough head. For now, the table next to the stand will have to do. Sometime I might try to hang a shelf near the stand's top. The only problem is there really isn't much room anyhow - with an XP3 and the autowater change solenoids up there at present, not to mention an Eheim hobby pump.Rather than the container sitting on the floor of the stand, can you raise it up a bit to reduce the head? I use 2 hooks screwed to the side of stand where I hang the container. It is just 2ft or even less difference, but enough for the pump to work well. See my 36gal journal for pictures.