gloo said:
1. does this thing get dunked into the sump pit? Or can it stand outside the sump pit?
There are many types. I was just showing an example of a large cartridge water pump for an aquarium.
The trick is how good the seals are. These pumps contain a large reservoir in which you are supposed to put filtering media. You don't need this, but it means the pump has a large mouth with a large O-ring seal, as well as inlets and outlets. If these will all work without leaking air, the pump can be in the air. But if not, the pump will need to be submerged, so it doesn't lose prime by leakage.
You'll have to check out the pumps to ensure the one you choose will keep a seal.
Problem with pond pumps is that they tend to need to be submerged and you won't have that luxury in your sump, since it will be drained regularly.
gloo said:
2. You seem to have experience with what I am trying to do...so the timer can actually be programmed to run every 10 minutes for about 5 minutes run time? Is it that flexible?
Flexibility is proportional to cost. But the $30 timers I've used have as many as 20 programs, meaning 20 on/off cycles per day. That means it could only cycle less than once per hour. But you can set the length. So,
1] on at 12:01 off at 12:21 (7 days/week)
2] on at 1:31 off at 1:51 (7 days/week)
...
20] on at 11:01, off at 11:20 (7 days/week)
Or whatever.
gloo said:
3. Do you think the speed controller Russ introduced in this thread can be used with the water pump you showed in the picture?
No need. With the above flexibility, you could dial the on time back by a minute at a time until your gallons per day throughput matches your needs.
Besides, the pumps have built-in flow restrictors. Better to alter the water flow than the motor revs.
But - this will still mean you're fiddling with it occasionally, because you'll never get it quite right. Especially since your inflow to the basin will change constantly with the weather.
gloo said:
4. Do you think the rubber hose idea will work?
Uh, you mean on the sump pump itself? to quiet the noise? Not sure how that would work. The outlet of a sump pump is already a hose, and you can't isolate the inlet since it is integral to the pump.
You wouldn't need to do that on a water pump, as they run pretty much silently.
gloo said:
I would do that If I can find one that is 1.5 inch diameter.
These pumps tend to use 1/2" rubber tube. I can't imagine trying to pump water up a 1 1/2" hose. What is the weight of a column of water 12 feet tall and 1.5" in diameter? About 40lbs? But I may be misunderstanding the purpose here.