this is what i went with

godeeporgohome123

Reefing newb
a HOB penguin 350 its the one with the 2 bio wheels... i have one and plan on getting the other soon...it says it can filter 70 gallons so 140 with the both of them running on a 40 gallon tank should be good ?
 
Those filters are a pain in the rear. You have to constantly clean those things out and make sure that you change them out about every 3 to 4 weeks due to the carbon losing its charge. I would just go with a sump or just go with a really good skimmer and just your live rock with no other filter
 
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