• Welcome to TONMO, the premier cephalopod interest community, and birthplace of #WorldOctopusDay and #CephalopodAwarenessDays. Founded in 2000, we are a large community of experts, hobbyists and enthusiasts, some of whom come together when we host our biennial conference. To join in on the fun, sign up. You can also become a Supporter for just $50/year to remove all ads and enjoy other perks. Follow us on Twitter for more cephy goodness.

Protein Skimming (how much should it be in the collection cup)


Apr 6, 2006
My question is how much should the collection cup be collecting say in a 24 hour period so that I know that the skimmer is working efficiently. I have a 54 gallon tank with 35-40 pounds of live rock an eheim canister filter rated for 193 gallons of water a Fluval 4 internal filter and a venturi style hang on protein skimmer rated for 150 gallons of water. I am the owner of a bimaculoide with the head almost the size of a golfball. I feed him twice a day,shrimp,snails,hermit crabs,and fiddlers. My collection cup is about 5 inches tall and maybe 5 inches around. I know that you can set the collecting dial to have it collect a wet protein witch will have more water in the cup and be a little more clear with water. Or a dry say a more dense protein darker in color witch the cup does not fill up quite as fast. The setting I usually aim for is to fill up maybe a one third of the cup in a 24 hour period witch will be more wet. Is this right or should I aim for a darker protein in the cup witch is more dry that doesn't fill up the cup as fast. I would say that a happy medium is always good just need some more advise on the situation.


TONMO Supporter
Mar 15, 2003
Many keepers set theirs to collect only the dark brown foam...me? I like to have a little more waste water in there. Sounds like yours is set about right. How are your water parameters?
Apr 20, 2005
A wile back i was realy worried that my skimmer wasen't working. It picked up maby half a cup every week. I turned out that my canister meant for twice the tank and my high quality live rock were getting rid of all of the scum before my skimmer. So I decided to do a little expariment I shut of my canister filter and my skimmer started picking up gunk.

Latest Posts

Forum statistics

Latest member

Monty Awards

TONMOCON IV (2011): Terri
TONMOCON V (2013): Jean
TONMOCON VI (2015): Taollan
TONMOCON VII (2018): ekocak