2 RP-Ms for a 90 gallon

[Areeflover]

Are 2 RP-Ms enough for a standard 90 gallon??

 

[Areeflover]

Bump

 

[heidilou]

Depends...what's going in there? 2600 gph times 2=5200 gph. Rule of thumb (depends on which article/video you watch) is 10-20x turn over rate times total volume= low flow. 20-40x turn over = medium flow and anything higher is considered high flow. 90 (plus sump?) would be 90x40 =3600 for high flow. Granted you wouldnt run both at same time and full power(only real way to get 5200 gph), so you realistically would be running around only 2600 gph as they rotate their settings. That would be good for a low flow to possible medium tank flow. Softies and some LPS would love that. SPS dominate would need more.

 

[Areeflover]

Depends...what's going in there? 2600 gph times 2=5200 gph. Rule of thumb (depends on which article/video you watch) is 10-20x turn over rate times total volume= low flow. 20-40x turn over = medium flow and anything higher is considered high flow. 90 (plus sump?) would be 90x40 =3600 for high flow. Granted you wouldnt run both at same time and full power(only real way to get 5200 gph), so you realistically would be running around only 2600 gph as they rotate their settings. That would be good for a low flow to possible medium tank flow. Softies and some LPS would love that. SPS dominate would need more.

Okay great I have the opportunity to get 2 of them for 100$ and trying to decide if it’s worth it. I’m thinking I can run both those and gyre

 

[Gtinnel]

Okay great I have the opportunity to get 2 of them for 100$ and trying to decide if it’s worth it.

I've never used the RP-Ms or even any powerheads of that style, but me personally for that price I would buy them. If you end up wanting more flow you could still add another powerhead in the future.

 

[heidilou]

If adding a 3rd source for water movement that would sufficient, for average mixed reef.
Happy reefing!!
I have one on my 90 but upgraded to MP40, however not a bad little unit for the price. 2 for $100 is a steal. The programming was a little tricky, so make sure you watch the Youtube videos on them.