Tropical Fish Keeping - Aquarium fish care and resources

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nbn 01-31-2013 04:03 PM

Sandbed moving because of water pump
Hi All,

There is a slight problem with my tank setup, currently I have 2 water pumps. One is at the top, the issue isn't with that one. But rather its the bottom water pump I have. It is pushing away my sandbed because it is too strong. I have this, it lets me adjust the strength of the pump itself but I set it to lowest and it is still a little too strong, just enough to move my sandbed. My sandbed is like 1 inch, and the main reason it is doing this (while the other one doesn't) is because the pump is directed from the back to the front, which means (with most tanks, it is the same) my width is shorter than my length so there isn't enough space for it to dim down the power of the pump before it hits the glass and therefore moves my sandbed.

I have tried angled it upward but it is still doing the same thing, does anyone have any suggestion for me?

I can try putting it on the side and let it shoot (length wise) but then it will create a water current which I dont really think it is the best for my fish.


100 gallon tank

<--------------------------------------------> pump (one) at the top of the tank

^(back, near the bottom)
V (front of the glass)


Also, I tried to put something to divert the flow but it seems like it just pushes out whatever I try to stuck infront of it.

Thanks. :)

Lap Chi

Molinious 01-31-2013 04:07 PM

raise the pump slightly and move the pump left to right front to back

Nilet699 01-31-2013 04:49 PM

I had this in a little tank, 15G with a fluval U2 in it. I merely got some filter sponge, cut to a cube, cut a lil out the centre and stretched it over the filter outlet to baffle it. Worked a treat.

nbn 02-01-2013 08:37 AM

Thanks for the tip,

I kept it at the same location, just added a piece of rock beneath it to hold it in place because the suction on it has worn out. And pointing it upward, so now it is ok.

Lap Chi

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