I have recently set up a number of 40 breeder tanks and have decided to go primarily with Sponge Filters. The tanks will be used mainly for Fry grow out, a breeder group here and there, and quarantine tanks.
What is the guide line for sponge filter size. For my canisters and HOB I go for 10 to...
http://www.washingtonpost.com/national/health-science/special-sensors-allow-fish-to-dart-away-from-potential-theats-at-the-last-moment/2012/11/26/574d0960-3254-11e2-bb9b-288a310849ee_story.html
Nice article, although I didn't see anything particularly new here.
Right now, I have one of my big display setups in the basement consisting of a 6' long 150 gallon sitting atop a 75 on one of Chris O'Leary's awesome custom metal stands. The 150 is filtered by an AC110 and 2 Rena XP3 canister filters.
I want to swap out the 75 for a 125 and the problem is...