tangale said:I'm not too sure about the gravity ones. I've heard that they aren't the best, but what do I know.
On a seperate note, instead of a float switch...do you think setting a timer on the powerhead for a minute a day would suffice? The powerhead would pump freshwater into my sump to replenish the evaporated sw. I would prob split the hose of the output from powerhead, just so that not too much water goes into the sump. Decent idea???? Thanks!