Which is the lesser evil?

[jabberwock]

I have had all three. They all stink...

 

[Ben's Pico Reefing]

Algae. At least it can be used as a nutrient export and remedied without loss. Ich can kill a fish and aiptasia can kill fish and coral more easily than algae as well as not easily harvestable. Unless you get something that likes to it it lol.

 

[Gumbies R Us]

Depends on what kind of algae we are talking about.