serqetry
- #1
Hi,
I have a Fluval FX6 filtering a 110 gallon agricultural stock tank (indoors) which is of course sitting on the ground, so the filter is at the same level. I know it is recommended to have canister filters below the tank but that is not possible here. The water level is higher than the top of the FX6 and I have the hoses come up a couple feet before going down into the water. I also understand that as long as the intake is above the impeller it should be fine. I have been experimenting with various arrangements of the hoses for a long time, and at times I have been able to get it to run completely silent, however it seems after doing filter maintenance something always changes slightly and I will often have issues again with noise and trapped air.
I do not know what changed this time but it is now making a very annoying loud trickling water sound from the top of the inside of the FX6, as if the canister is not completely full and water is dripping/splashing down to the surface inside the filter. To further support this theory if I close the output flow halfway after a while it will stop doing this, presumably because the pressure lets the water level fill properly all the way to the top... but of course flow rate is unacceptably low then. I have replaced O-rings and uses silicone lubricant but it did not change anything. I don't even understand how air gets into the filter like this, it seems like it should be more or less air-tight. Also the intake hose is less than half the length of the output hose, so it isn't an issue of it being harder to pull water in than push water out.
I couldn't think of anything else that could have changed except maybe removing the hoses and re-clamping them repeatedly has made the hoses not air tight anymore? So I ordered a new ribbed hose just in case... but it really doesn't look like anything is wrong with the current hoses.
The output into the water is as high and I can put it but it's basically right at the same height as the FX6. The intake is slightly lower. There have never been any leaks, and most importantly I have been running it this way for about a year and it was not doing this trickling water sound until the last time I cleaned the filter.
I know this is a bit weird of a setup, but I just would like to know what variables could be causing the changes I am experiencing. Any thoughts/suggestions would be appreciated. Maybe there is something more to the physics of canister filters that I don't understand?
Thanks.
I have a Fluval FX6 filtering a 110 gallon agricultural stock tank (indoors) which is of course sitting on the ground, so the filter is at the same level. I know it is recommended to have canister filters below the tank but that is not possible here. The water level is higher than the top of the FX6 and I have the hoses come up a couple feet before going down into the water. I also understand that as long as the intake is above the impeller it should be fine. I have been experimenting with various arrangements of the hoses for a long time, and at times I have been able to get it to run completely silent, however it seems after doing filter maintenance something always changes slightly and I will often have issues again with noise and trapped air.
I do not know what changed this time but it is now making a very annoying loud trickling water sound from the top of the inside of the FX6, as if the canister is not completely full and water is dripping/splashing down to the surface inside the filter. To further support this theory if I close the output flow halfway after a while it will stop doing this, presumably because the pressure lets the water level fill properly all the way to the top... but of course flow rate is unacceptably low then. I have replaced O-rings and uses silicone lubricant but it did not change anything. I don't even understand how air gets into the filter like this, it seems like it should be more or less air-tight. Also the intake hose is less than half the length of the output hose, so it isn't an issue of it being harder to pull water in than push water out.
I couldn't think of anything else that could have changed except maybe removing the hoses and re-clamping them repeatedly has made the hoses not air tight anymore? So I ordered a new ribbed hose just in case... but it really doesn't look like anything is wrong with the current hoses.
The output into the water is as high and I can put it but it's basically right at the same height as the FX6. The intake is slightly lower. There have never been any leaks, and most importantly I have been running it this way for about a year and it was not doing this trickling water sound until the last time I cleaned the filter.
I know this is a bit weird of a setup, but I just would like to know what variables could be causing the changes I am experiencing. Any thoughts/suggestions would be appreciated. Maybe there is something more to the physics of canister filters that I don't understand?
Thanks.