Originally Posted by Fresh2o
What was the old filter and what is the new filter?
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I'm assuming either hob
as long as you have a good amount of live rock you should be ok, as you said it is up and running 2 months , your rock should have enough bb to support the stock you have , just don't add any new stock till your new filter has a chance to build bb , your tank is lightly stocked snail and hermits you have and damsel will be just fine ,
once you get everything stable I would suggest to get rid of the damsel they are just little demons , they cause more trouble than they are worth , I lost many a fish because of damsels,