Help me with my sump

[RDNanoGuy]

1. 200 Gph will be fine. That equals approximately 6.66x turnover.

2. A good quality hob overflow should maintain siphon and restart when the there is an outage. If you want extra peace of mind get the lifereef nano overflow. They restart EVERY TIME.

3. You should be able to mount an overflow into the back chambers to conceal it from the viewing area.

Good luck!