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#2
12-08-2006, 05:06 AM
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Here are some ways I could think of:
1) Use a dosing pump, such as a peristaltic type (e.g., http://oceanaquatics.com/store/produ...edic-SP-3000-/ ), or a metering pump, or any kind of low-volume pump (e.g., http://www.premiumaquatics.com/Merch...Category_Code= ) , on a timer (might still want to use a float switch in tandem for extra security - i.e., shutoff if level reaches set height) 2) Use a solenoid valve (like for irrigation) on a timer and gravity feed with a float valve (again so as to not overfill) 3) This is probably more like #1, but a little powerhead on a timer to feed a tiny bit of pressure into a kalk mixer or a kalk reservoir, and an irrigation dripline valve to throttle back the driprate.
__________________
-- Tony My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee! 
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