RW-4 for 20 Long

[jmdub85]

I have a 20 long with 2 koralia 425's located on opposite ends of the tank pointed toward the surface of the water. I have never been very impressed with the flow in my tank (don't get very much surface agitation). I am considering replacing them with a single RW-4. Will this provide enough flow? The reviews I have read seem mostly positive and I have found them for a good price.

Thanks

[sepulvd]

Am using a wp-10 and ac70 on my 20 long more than enough flow

[maddmaxx]

I have a 20 long with 2 koralia 425's located on opposite ends of the tank pointed toward the surface of the water. I have never been very impressed with the flow in my tank (don't get very much surface agitation). I am considering replacing them with a single RW-4. Will this provide enough flow? The reviews I have read seem mostly positive and I have found them for a good price.

Thanks

rw4 would be plenty. you could always use one of your existing koralias to agitate the surface and use the rw4 for more intank movement....

[Incaico]

rw4 would be plenty. you could always use one of your existing koralias to agitate the surface and use the rw4 for more intank movement....


agreed. RW-4 should be plenty.

[adamv]

I am using an RW-8 and RW-4 on a 40 gal tank and the "4" is great on any setting. I'm sure it will be more than enough for your 20 gal.

[jrp1588]

I use 2 RW-4's in my 29gal at full power. I'd get two if I was you, if nothing else so you can get more even flow.