Powerhead/s For 190L Aquarium

[ChilliPepper]

I've been looking at the Hydor Koralia powerheads, they seem a reasonable price and I like the magnet fixture and that you can change the direction of flow.

Just wondering whether I'd be OK with one Hydor Koralia 4 or would I need two, or two Hydor Koralia 3's?

Thanks

 

[seffieuk]

Lets think about this for a minute. you need at least 3800 litres per hr.

You also need good flow all round the live rock.

So the ideal would be two powerheads (good if one breaks down as well)

so getting x2 koralia 2s would give you 2 x 2300 = 4600

Seffie x