.... but I nightly net out any leftover food and crap out of my bare tank. I change 50% of the water every 2-3 weeks (gotta watch the water bill) and change the filter every 3 months.
yep those ac110s are dirt cheap...
sumps are super easy to build.. $20 in material and $60 for a pump at homedepot.. you just need to add filtration.. not completely replace what you have..
how about you skip the armatus as it will require a huge tank, live feedings and more filtration than you want to pay. If you have it, sell it...I'm sure you could get enough for it to buy a fx5...your tank is already kind of overstocked...however if your looking for a quick fix ac110