Hey, was just wondering if anyone has one of these? There seem to be loads of different types. Anyone know which ones are more economical/cheap? I'm growing Triops (they're like seamonkeys) and want to use filtered water instead of buying bottled water all the time. Should I just get this cheap one? I'm sure they all do the same job, not sure what the difference is supposed to be.
Loughborough at number 1