Mike What model Tetra Deep Water pump are you using? Hugh Michael Gray wrote: > > I am using Tetra's Deep Water pump to run 8 ten gallon tanks equipped with > hydro sponges.....I am very pleased with the output. These tanks are for > apistos....since killies like a little less surface agitation, you could > probably run the 12 tanks it says you can, or at least 10 tanks.