what size clean up crew?

what would be an good sized clean up crew for a 20 gallon long style tank , as of right now i have 10 red leg hermits about 18 astera snails but yet to control algae they havent been cleaning my live sand
to limit the amount of algae i turned on my uv sterlizer(8 watt U2) and also i orderd a remora skimmer as well , also cut down the ammount of hours the light is on
but how many hermits and snails and so on should i have in my 20 gallon(long style) tank
(also my tank has 21 pounds of fiji live rock)
 

guppie

Member
I would think you have about just enough, maybe a couple more hermits and maybe a brittle star. Good Luck
 
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