I'm the OP's fiancé. I'm fine cutting back on food. I'm just afraid the super timid firefish won't find a single pellet. Also, I want to make sure I'm not starving the clean up crew. Also this was a very sudden spike in ammonia level with no recent practice change on my part as far as feeding. Only new thing was the addition of a HOB
filter, hence us finding possible blame with the filter. I don't see any harm in switching to a sump in addition to cutting back on feeding, right? It's not going to ruin me financially or anything. Plus it allows me to have an in simp type skimmer. Once my tank stops crashing on me, I want to add more fish anyway.