I've been keeping marine fish and coral for over 20 years. I recently lost my tomato clown - he was my first fish - and have decided to not keep any fish at all and focus only on coral. I like SPS, have montis pocis, and have had limited success with acoropora. I once had my tank's monti's wiped out by monti eating nudi's brought in from an LFS (absolutely fish if anyone is asking - never go there!). I have a mostly fully automated in wall 65 gallon aquarium - just water changes and top offs are manual. Kalk dosing and everything else is automated.