can sum one explain how needle wheel skimmrs down rft and diversion system skimmers work anm\d which one is best fer a 40 gallon considereing my budget is 500US
amehel0;1494429; said:yeh i will be upping it to a 80g
i want corals
fish
and more inverts
Pufferpunk;1493925; said:I have a backpac on my 40g & it works fantastic. Why spend $500? Do you have a sump? What are you keeping in your tank?