The best replacement for ick is fungus.

The best alternatives to ick are rated as following:
★★★★★  fungus
★★★  velvet
★★★  ich
★★  fin rot
★★  white spot

Your alternative for ick is not listed? Suggest!
Speaking about ick, one probably shouldn't forget about fish.

Other search terms related to ick and their ratings are:
★★★★★ fish
★ saltwater fish
You have in mind a companion for ick and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ick in all years. Click on graph for more.
ick
fungus
velvet