Think long and hard and do research!
Think long and hard and do research!
Your tank size is ok for erectus (perhaps 2 pairs). I've successfully been keeping one pair in a 29g for 7 months. They are very entertaining to watch, but they are also a lot of work. Making sure they eat enough, and making sure your around enough to feed them, can sometimes be a challenge. Unlike most fish and coral that can go without food for a few days and be okay-- in a few days without food sh will start dying. If you go on vacation, it can be difficult to "train" someone else to feed them for you (they'll either underfeed or overfeed). Due to the amount of food you feed them weekly/3x per month water changes are nearly required (tank setup, etc. obviously effects the frequency of changes).
The tolerated flow rate is debatable. The key is they need a place in your tank with low flow (an preferably low light) to escape to when they don't want to be out and about...
I'm not sure if I'd use a trickle . . . they tend to raise nitrates in my experience. You won't need any help doing that. I'd just do a sump with a refugium.
Here is my list of questions to ask yourself:
- Can you be around to feed them twice a day 6 days a week (some folks don't feed once a week)? If not, an extended feeding once a day (basically feed twice within 1/2 hour or so)?
- Can you find someone to feed them when your away more than a day?
- Can you keep the water temp 72-74F (do you have AC during the summer or a chiller on the tank)?
- Can you change 10-20% water weekly?
- Do you have access to PE Mysis or other 3/4" shrimp like creatures?
- You're going to buy captive breed! (trust me, it's easier and worth the money)
- You're going to have time to watch them and learn there behaviors? Subtle changes seem to indicate "problems" before they become PROBLEMS :>)