Kalk and Top up Dosing Pump for very low volumes ??

[Fish]

newguy,
Thanks for the lead. I just checked these pumps out and realized that I still need something that doses way less than 3gph, more like 0.02gph (1/2gal per day). The problem is that I lose so little to evaporation with this nano. The aqualifter would be just about perfect if my tank was 250gal - and now wouldn't be a good time to run that past the wife .

Cheers,
- Chad