My amano shrimp dissappeared in two hours flat, courtesy of a pair of
juvenile angels, and small pearled gourami. Bah.

Have a problem with leaving it on 24/7 in that my CO2 is a fixed amount in a
chamber per day, and topping up twice a day isn't feasible if I'm not
home... still not tempted to try the DIY method though ;-) I'll maybe try
altering the outflow of the filter, since that should have a similar effect
to installing a powerhead.

Velvet