How Much Flow

[jaylam]

Is there a calculation to work out how much powerhead flow you need for xx litres?

or is it just recommended that you must have xx times flow for xx litres, is so what are they?

 

[ben1987]

mixed reef around 20X min

SPS reef 40X min

 

[jaylam]

mixed reef around 20X min

SPS reef 40X min

Sorry another question, is that in total or per power head? So 260*20 = 5200 with that in mind does that mean 2 Hydor Koralia Evo 5200lph is 40x flow?

Whats a SPS reef?

 

[FishTankCrazy]

mixed reef around 20X min

SPS reef 40X min

Sorry another question, is that in total or per power head? So 260*20 = 5200 with that in mind does that mean 2 Hydor Koralia Evo 5200lph is 40x flow?

Whats a SPS reef?

What about for a tropical fish tank?

 

[-Nemo-]

mixed reef around 20X min

SPS reef 40X min

Sorry another question, is that in total or per power head? So 260*20 = 5200 with that in mind does that mean 2 Hydor Koralia Evo 5200lph is 40x flow?

Whats a SPS reef?

IT would be total. So if you have a 260L, you want a TOTAL of 5200 lph. 2 powerheads at 2600 (or something similar) would meet this.

An SPS reef is a tank with all or nearly all SPS (SPS = Small Stoney Polyp) corals. SPS corals need a lot of light and flow.

 

[jaylam]

mixed reef around 20X min

SPS reef 40X min

Sorry another question, is that in total or per power head? So 260*20 = 5200 with that in mind does that mean 2 Hydor Koralia Evo 5200lph is 40x flow?

Whats a SPS reef?

IT would be total. So if you have a 260L, you want a TOTAL of 5200 lph. 2 powerheads at 2600 (or something similar) would meet this.

An SPS reef is a tank with all or nearly all SPS (SPS = Small Stoney Polyp) corals. SPS corals need a lot of light and flow.

Exactly what I needed to know, thanks. Will order some replacement powerheads now.

 

[jaylam]

Just ordered 2 ev0 4000's.

I popped out to the lfs near my work at lunch and asked how much they could get them for (£30 more than online) anyway he said to me:

"The thing with powerheads and water flow in a marine tank is you shouldnt have them pointing at each other, you should have one pushing towards the front of the tank at and the one the other side pointing towards the other powerhead"

That cant be right can it? that will just create a whirlpool and I will get a load of dirt just floating in the middle of the tank. I thought the general rule was to have them pointing to each other or am I wrong?

 

[Arlanda7]

The idea is to create circulation flow... if they point at each other they wil just meet in the middle and counteract each other.