help me choose a skimmer pls..

Originally Posted by decentkid

ermz...guys...help me clarify some things...

h&s is needlewheel
macro is needlewheel and venturi
aquac is spray injection???
aqua medic is ???

anymore other brands i missed out?

aqua-medic turbofloter multi sl is needlewheel skimmer...
devilfire is right... needlewheel skimmer works exactly the same as venturi skimmer just that the pump they use got needlewheel

Aspirating Venturi to be exact. It means the venturi is placed at the inlet of pump that draws in the water & air.

Cheers!

Goh

Originally Posted by Ekia

aqua-medic turbofloter multi sl is needlewheel skimmer...
devilfire is right... needlewheel skimmer works exactly the same as venturi skimmer just that the pump they use got needlewheel

Originally Posted by Goh_TM

Aspirating Venturi to be exact. It means the venturi is placed at the inlet of pump that draws in the water & air.

Cheers!

Goh

wow.. u wake up early... i havent sleep yet..

To be exact.....For venturi - Water is being pushed into the skimmer body and for the needle wheel - water is drawn into the skimmer body.
Just like our cars, one is rear wheel drive and the other is a front wheel drive...

Originally Posted by nitro

To be exact.....For venturi - Water is being pushed into the skimmer body and for the needle wheel - water is drawn into the skimmer body.
Just like our cars, one is rear wheel drive and the other is a front wheel drive...

hmm.. learnt something new.....

But whats the difference between water being 'pushed' into the skimmer body and water 'drawn' into the skimmer body?

Venturi Skimmers-
1. While water is being pump thru the venturi, air is also drawn in thru a small air inlet.
2. Basically when water leaves the pump there is still no bubble in the water until it reaches the venturi. Check out the pic


Needle wheel
1. When water is being suck in by the pump, air is also drawn in thru the air in-let.
2. At this stage the bubbles size is still quite large.
3. When it reaches the needle wheel, the large bubbles are being "chop" into many fine bubbles before going into the skimmer body.
4. Therefore, when water leaves the pump fine bubbles are already in the water.


So effectively, one is pushing while the other is pulling. Jus like the rear wheel and front wheel drive car.

Venturi works in the same principle as a powerhead/Eden 228 where an air hose tubing (or a rigid tube) can be attached to the output pipe and many small bubbles been can blown out into the tank.

understood! Thanks nitro.... didn't know about this..

for the record, bro Nitro makes good skimmers. check his gallery! cheerz

Originally Posted by Ekia

understood! Thanks nitro.... didn't know about this..

Anytime