Yes you can have a sump and it is preferred.
Lighting can be ambient lighting, low or medium to satisfy whatever else you might have in the tank as the seahorses don't need any more than enough to see by.
As for corals, see the TANKMATES GUIDE to see what would be suitable.
For more information check out the links at the bottom of "MY THOUGHTS" page.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.