Tunze Osmolater Meter Pump

[hawk]

I think I am on my 4th pump in 2 years(about $25 each). One was fried after running dry. I think it is suppose to have a run dry feature but I don't think it kicks in soon enough. I do use it with a kalk reactor and on my old set-up was pumping 5ft verticle so the head was probably more than the unit was designed for. I've been able to lower it to about 3ft now, which works alot better. Overall I like the system and would buy it again.