The new hydor nano pumps are great! Highly recommend them.

I bought the double float set from autotopoff.com and an aqualifter. if the aqualifter ever packs it in, i will switch to a dosing pump from brs. no more worrying about syphon after that

Awfully small hose on dosing pumps for an ATO.

Plus not meant got continuous running... As in prolonged filling will wear it out fast.

just checked their site again. the tube is said to last 12 months at 2 hrs per day use. thats only approx 1.5g/day from the 50ml/min pump. that is definately a little low

+1 on Tunze very reliable. Have it running for years now. Pump is very good also except when you use it as a doser and drop dissolved solids to a top off reservoir, then the pump will not live for long, if you just dose clear water and avoid dry runs, the pump will last for a very long time. Even if it doesn't live long, its only $23 to replace.