Keep Filter Running While Doing Water Changes?

[Mako Man111]

Is it alright to keep the filters running while doing water changes? I have a HOB filter and really don't want to have to fill it back up to start it again after the water change, but is it safe for the motor?

 

[xJake]

It depends on what you're doing in the tank. Are you stirring up a bunch of stuff and moving things around? Do you have sand in the tank?

 

[Mako Man111]

It depends on what you're doing in the tank. Are you stirring up a bunch of stuff and moving things around? Do you have sand in the tank?

No its gravel, I just gravel vac and do the water change at the same time with my python unit. I was just asking whether it would be to much stress on the filter to have sucking up water at such a low water level for it.

 

[PaulasPets]

Is the impeller running dry? In that case I would not leave it running because it will damage the impeller if done often. You should know by the sound a dry running impeller makes, that it is not good for your pump. If its just that the water will have to be pumped higher, I would say no problem. You will only have a bit less waterflow during the low-tide in your tank.

Paula

 

[Mako Man111]

Is the impeller running dry? In that case I would not leave it running because it will damage the impeller if done often. You should know by the sound a dry running impeller makes, that it is not good for your pump.

Paula

No no no, I mean it sucks up the water fine, but I wasn't sure if it was safe to have it suck up water with the tank water level being lower. Meaning when it sucks it up it makes a waterfall. I wasn't sure if have the water level lower puts any more stress on the motor.

 

[Tolak]

I do 50% water changes with Aqua Clear hob's running all the time. They keep running, and I've been doing this for years.