KaiserSousay;3108592; said:
I was always told you should never pull the water, cause if the media gets clogged up it'll and the flow drops the impeller can run dry and burn out, whereas the other way round the impellar just slows down....???
home made canister..lets see if it workks tommarow
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I was always told you should never pull the water, cause if the media gets clogged up it'll and the flow drops the impeller can run dry and burn out, whereas the other way round the impellar just slows down....???
True enough, wouldn`t consider it on anything that didn`t get plenty of attention. Would not build a sump/w external pump, that did not have a level switch to guard against just that. Not just running dry, but prolonged cavatation could ruin impeller and housing.impeller can run dry and burn out
going sump..i think its a sump..i am basically going to put the pump in the 5g bucket or a 10gallon tank and have it run open with two hose poring water into the tank and the pump with the pipe going up and then splitting off into to different tanks..and i will just throw my media in and im going to either make or try to look for that created white plastic sheet, some times used for lobsters. many people have them were could i get that ¿i am in newyork.thnx
Whoever you got that information from needs to step back and not give advise.I was always told you should never pull the water, cause if the media gets clogged up it'll and the flow drops the impeller can run dry and burn out, whereas the other way round the impellar just slows down....???
It doesn't matter if you push or pull water through, if the media clogs, the flow will slow of both suction and discharge side of the filter. In either case, the impeller will NEVER run dry in this situation. The impeller will never burn out. The pump "could" burn out if it runs long enough, and im talking a very long time. The water cools the pump so eventually the water will start to get hot in the impeller well of the pump but because water transfers heat so well, it takes a VERY long time for this to happen.
See here is the problem. Pushing water through the canister filter only adds pressure to the canister's weak points, such as the cover and gaskets. If you notice, almost all canister filters pull water through the media. This can reduce the pressure exerted on all weak points of the canister filters and can prevent them from failing prematurely.
So you should always pull water through the media. If you intake is large enough, the head pressure from the tank will be enough to push the water through the media and the pump will only be circulating the water. Until the media starts to clog.
i am going to be using a 5 gallon bucket and have a huge pump on the bottom with a pipe attached to it running in the center to the top of the bucket.poring water into two 55 gallon tanks. i am going to have to smaller pumps one in each 55g poring water into the 5gallon bucket. and i will have my media stacked in the bucket. was even thinking about having a hand vac (python) in each tank instead of a small pump. would that work good ?¿? any one know??¿ might try it...idk and what do u guys think of the idea about the sump bucket?
Jgray152;3113958; said:Whoever you got that information from needs to step back and not give advise.
If the pump is sucking faster than water is getting dragged through it will cavitate. The impellar will spin at the same rate, and if the water aint there it will be running dry.
If you push the water into the canister as the resistance increases the impellar will slow down as it works harder pushing the water through...Thus it wont cavitate...
It was someone on here that explained that to me.
