Weekend project (thanks Barbara)

[sagent3000]

i am going to do a kalk reactor and here is my plan.

i am going to have a pump on a water filter so during the day the water can circulate around the filter. then have the pump cut off one hour before the second set of lights go out so when the second set goes out i can then drip kalk until in the morning.

now here are my questions:

1. after i drip for the night will the water still circulate since i have dripped some out?

2. i want to have the water start pumping from the reactor automatically and then have it dripped at the end of the tube. whats the smallest pump that i can get that will do this?

this is the unit i am going to use
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[sagent3000]

i was waiting on you to tell me how yours went. well i guess i will have to do mine this weekened and i will post pictures