Time for a new powerhead (or two)

messiah023

Reefing newb
I am not thrilled with the (2) Koralia #1s in my 30g.
These things are nice, but after about 6 months, the movement is minimal.

I am tossing around (3) options :

1.) Two Tunze Nanostream 6025s.
2.) One Tunze Nanostream 6025 & one 6045.
3.) One Vortech MP20w.

Does anyone have any suggestions or comments?

How much bigger than the Koralia pumps are teh Tunzes? I haven't seen them and their site only shows diameter's. I don't want to "overpower" the DT with giant powerheads.

Would one MP20w push enough water to not warrant anymore movement in the tank? I wouldn't have anything breaking the surface water since I'm sumpless. From what I read, the MP20w will give flow to the entire tankspace.

All Input Welcomed!
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I'm sure the Vortech would take care of the flow.But I'd think that just having one powerhead would keep the flow too constant and less chaotic.
I dont know about the Tunze.But something I do the always helps my Koralias regain power.
When I clean them,I take them apart and let them soak in vinegar for about 30 minutes to dissolve any calcium carbonate that built up on the magnet and motor.
 
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