Submersible pump

Joined
18 Jul 2008
Posts
722
Reaction score
2
Location
durban
hi guys...

a submersible pump basically has an intake of water and outputs it
to what ever destination you require, so could you use a submersible pump
as a power head in the sense of creating water flow in your tank
and maybe even direct it towards your corals ???????
 

jacquesb

Retired Moderator
Joined
29 May 2007
Posts
17,868
Reaction score
72
Location
Cape Town
Hi Occelaris - YES. BUT no. That's not what you want.

The reason for suggesting that you rather use a power-head like a SEIO, ReSun Wavemaker, Boyu Waver or Tunze, is that these power-heads actually deliver a HUGE WATER FLOW by dispersing the water it pushes out, into a HUGE wavelike stream under water, and NOT concentrating the water in one place, like a jet-stream.

Corals do not like direct linear water flow. They prefer indirect strong water currents that is extremely chaotic and turbulent. Meaning that the water movement around them should be a huge body/amount of water that moves together, and not only a small diameter jet-stream of water that blows directly towards them.....

I hope that you understand....
 
Joined
18 Jul 2008
Posts
722
Reaction score
2
Location
durban
100% understand, i get what you mean as a wave maker is move one that pushes the water flow with an interval inbetween the flow where as the submersible pump has a continuos flow at one spot, its like if you had a submersible pump with a switch that would be turned on and off consistently to creat a wave flow.
 

jacquesb

Retired Moderator
Joined
29 May 2007
Posts
17,868
Reaction score
72
Location
Cape Town
Occelaris - the ReSun Wavemaker and the Boyu Wavers come with a timing circuit. This circuit constantly switches between 3 modes of pumping strength, ie. 2 "Speeds" at which the pumps run at.
The ReSun, has the following settings: 15000 litres per hour, 8000 litres per hour, and 2400 litres per hour. BUT - the ReSun also has a propeller and not an impeller (big difference) which is 67mm in diameter - the pumps you are talking about originally, only have impellers with a maximum blade diameter of +-35 to 40mm (the BIGGEST of the internal/underwater pumps/powerheads with impellers..... BUT, their outlets are a LOT smaller... The ReSun's for example has an outlet of +-55/60mm.... this means that the water is immediately dispersed very widely.

The switching of the ReSun power-heads' power, theoretically creates "waves" (not really in practice). BUT - this does indeed help with making the water flow chaotic and random/turbulent!

The same way that the SEIO and the Tunze's controllers work..... they also have these cycles where they switch pumps on and off to create "random" and chaotic/turbulent flow.....

We are trying to achieve something similar to what's happening on a real reef in the sea.....
 

jacquesb

Retired Moderator
Joined
29 May 2007
Posts
17,868
Reaction score
72
Location
Cape Town
Yes - the "next best thing" could be a power-head/submersible pump.... (to a compared to a SEIO/ReSun/Boyu/Tunze).....
If you should decide to go for a "normal" submersible pump, then make sure that you don't point the water flow directly at the life-stock - rather point it towards the glass panels of the tank, that the water flow then deflect off the glass panels of the tank.....
 
Joined
18 Jul 2008
Posts
722
Reaction score
2
Location
durban
good point jacques,were just thinking of keepinf water flow in your tank so you dont
get dead spots in your tank for algae to grow
 

Top