Hondachico
Aquarium Advice Freak
- Joined
- Mar 10, 2012
- Messages
- 364
I really don't understand why this had happened all fish were fine swimming around.
uh.oh... said:Koralia evolutions can reverse flow at times, pulling fish in to them. Something breaks in the grate, and then its whirl pool time
Saratj1 said:If you look at your power heads at where the shaft connects in front of the prop to the grate there is a shape that should prevent the powerhead from working in reverse its shaped like a ramp with a sharp drop, the end of the powerhead prop will fit into this shape. Check this out next time your powerhead is out of water , slide the prop forward then twist it one way, then twist it the other while pulling it forward, it should only twist one way, I have three different powerheads and they all have this feature.
Schism said:Pretty sure the reverse running only happens on startup tho. Probably something you would notice. But this is a possible scenerio.
Saratj1 said:It doesn't matter, if this safety feature is broken then if the pump starts in reverse it will continue to run in reverse, if the pump starts in reverse and this feature is intact, the powerhead will stop spinning in about 3 or 4 turns of the prop. It works by the prop pushing, if the motor is running backwards it will push the prop torwards the front , if the motor is spinning correctly then the force of the prop will push against the back of the housing.
Also check the prop on the shaft to make sure it slides freely on the shaft, the shaft can sometimes corrode and gum up so the prop cannot slide and the safety feature won't work.
Here's a pic of what I'm talking about, if this is working correctly your powerhead will not spin backwards.
uh.oh... said:Koralia evolutions can reverse flow at times, pulling fish in to them. Something breaks in the grate, and then its whirl pool time
Sniperhank said:In my 55 reef, I have a koralia 1050, 4 750s, a 550, and a marineland that equals a 1050. None of my fish ever get stuck in them. I don't think too much flow is the problem.
Benamayer said:+1... Some aquarists are firm believers in 50+ times the amount of gallons in your tank for flow... Think about the ocean