Which combo should I get.

[bassman57]

I have a 55 gallon that I'm slowly turning into a reef tank. I am going to get 2 Seio pumps. Should I get 2x620's, 2x820's, or 1x620 and 1x820???

[chadfarmer]

what kind of corals (sand or no sand)

[bassman57]

sand. Right now I only have 1 polyp, but i plan to add some more zoos, LPS, softies, and possibly far down the line some SPS.

[bassman57]

bump^^^

[bassman57]

anyone? :)

[bassman57]

bump one more time before i just decided on my own(probably a bad idea ;)).

[david8956]

820's.

You know the flow on these can be adjusted right? You can turn down the 820's if needed, but if the 620's don't give you enough flow you're just stuck.

I have 2 820's now, used to have a 620 also. The 620 felt / looked very weak to me. Sold it and bought my 2nd 820.

[bassman57]

that's what i was thinking. but i didn't know you can dial the flow down. how much can you dial it down?