My first Reefer 350

[wes_22]

Thank for your feedback guys!!!
Some updates and where i got some problems.
1. After cycle end i put clean up crew (Blue Leg Hermit Crabs, Red Scarlet Hermit Crabs, Turbo Snails and Nassarius Snails) before i put them i check my water parameters and it was good.
2. after one week since i put cleanup crew i have add a pair clown, water parameters was also good.

So for one week clowns and clean up crew was doing good till last week clowns suddenly was covered with white spots. it happened right on next day when i did 5% water change. I have tried to treat them from ICK but with no luck
Clean up crew doing good but i have lost clowns

Not sure why this happened, could it be that introduced when i changed water?
Im not ready to put new fish any time soon until i figure out what happened and make sure it safe to put new fish.