Good review. I'll have to look them up. I use primarily sponge filters, two per tank. Sometimes I add a box filter. I like box filters; they were what I started out with in the 60s and I'm familiar with their use. Right now, I'm fighting a bacteria bloom and ammonia spike in my show tank, so I'm running a box filter with filter floss, Zeolite, and a fine filter pad. It's slowly getting the aquarium back under control. When it gets better, I'll put a finer filter pad and maybe some charcoal in the box filter. Your water is always so clear! Is it due to using cannister filters, Purigen, or both? Take care.
