Astria Snails in a 20 gallon

[Rdela568]

I’m finishing up my cycle and am getting a lot of hair algae. How many Astrias would you recommend for a 20 gallon with lots of rock and any other inverts? I’m also going to be running phosban.

 

[Bayareareefer18]

I found trochus to be much more active than my astreas although I have a mix of both. Key is to manually remove as much of the tall hair algae so that they will eat what's left.