RW-4 in a 20G

[JmeJReefer]

From my understanding, the rw-4 is equivalent to the jebao wp-10 which is in my 14g biocube without issues. An rw-4 will be fine in a 20 gallon. A low intensity "else" mode should give u the random flow ur lookin for.

[bleevin]

I have a rw-4 in a 20g long. I can't seem to run it in else mode. It produces a lot of undertow? and slowly clears the sand under the pump. So far the only way I can run it, is in W1 mode.

I have about an inch of sand and the pump is about 2 1/2 inches below the water line. The water line is about 0.25 inchs below the bottom of the black trim.

[intarsiabox]

Originally Posted by bleevin

I have a rw-4 in a 20g long. I can't seem to run it in else mode. It produces a lot of undertow? and slowly clears the sand under the pump. So far the only way I can run it, is in W1 mode.

I have about an inch of sand and the pump is about 2 1/2 inches below the water line. The water line is about 0.25 inchs below the bottom of the black trim.

I had the same problem with the WP-25, I could only use W-1 as well. I have a pretty fine sand for my goby and wrasse. I had to switch out my Aquaclear 70 for a 30 model because it push all my sand around.

[intarsiabox]

Originally Posted by JmeJReefer

From my understanding, the rw-4 is equivalent to the jebao wp-10 which is in my 14g biocube without issues. An rw-4 will be fine in a 20 gallon. A low intensity "else" mode should give u the random flow ur lookin for.

Do you have a sand bed in your tank? Fine or coarse sand? Thanks for the reply!